/*
   Copyright (C) 1999-2006 Id Software, Inc. and contributors.
   For a list of contributors, see the accompanying CONTRIBUTORS file.

   This file is part of GtkRadiant.

   GtkRadiant is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   GtkRadiant is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GtkRadiant; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

//
// XY Window
//
// Leonardo Zide (leo@lokigames.com)
//

#include "xywindow.h"

#include <gtk/gtk.h>

#include "debugging/debugging.h"

#include "ientity.h"
#include "igl.h"
#include "ibrush.h"
#include "iundo.h"
#include "iimage.h"
#include "ifilesystem.h"
#include "os/path.h"
#include "image.h"
#include "gtkutil/messagebox.h"

#include <uilib/uilib.h>
#include <gdk/gdkkeysyms.h>

#include "generic/callback.h"
#include "string/string.h"
#include "stream/stringstream.h"

#include "scenelib.h"
#include "eclasslib.h"
#include "renderer.h"
#include "moduleobserver.h"

#include "gtkutil/menu.h"
#include "gtkutil/container.h"
#include "gtkutil/widget.h"
#include "gtkutil/glwidget.h"
#include "gtkutil/filechooser.h"
#include "gtkmisc.h"
#include "select.h"
#include "csg.h"
#include "brushmanip.h"
#include "selection.h"
#include "entity.h"
#include "camwindow.h"
#include "texwindow.h"
#include "mainframe.h"
#include "preferences.h"
#include "commands.h"
#include "feedback.h"
#include "grid.h"
#include "windowobservers.h"

void LoadTextureRGBA(qtexture_t *q, unsigned char *pPixels, int nWidth, int nHeight);

// d1223m
extern bool g_brush_always_caulk;

//!\todo Rewrite.
class ClipPoint {
public:
    Vector3 m_ptClip;        // the 3d point
    bool m_bSet;

    ClipPoint()
    {
        Reset();
    };

    void Reset()
    {
        m_ptClip[0] = m_ptClip[1] = m_ptClip[2] = 0.0;
        m_bSet = false;
    }

    bool Set()
    {
        return m_bSet;
    }

    void Set(bool b)
    {
        m_bSet = b;
    }

    operator Vector3 &()
    {
        return m_ptClip;
    };

/*! Draw clip/path point with rasterized number label */
    void Draw(int num, float scale);

/*! Draw clip/path point with rasterized string label */
    void Draw(const char *label, float scale);
};

VIEWTYPE g_clip_viewtype;
bool g_bSwitch = true;
bool g_clip_useCaulk = false;
ClipPoint g_Clip1;
ClipPoint g_Clip2;
ClipPoint g_Clip3;
ClipPoint *g_pMovingClip = 0;

/* Drawing clip points */
void ClipPoint::Draw(int num, float scale)
{
    StringOutputStream label(4);
    label << num;
    Draw(label.c_str(), scale);
}

void ClipPoint::Draw(const char *label, float scale)
{
    // draw point
    glPointSize(4);
    glColor3fv(vector3_to_array(g_xywindow_globals.color_clipper));
    glBegin(GL_POINTS);
    glVertex3fv(vector3_to_array(m_ptClip));
    glEnd();
    glPointSize(1);

    float offset = 2.0f / scale;

    // draw label
    glRasterPos3f(m_ptClip[0] + offset, m_ptClip[1] + offset, m_ptClip[2] + offset);
    glCallLists(GLsizei(strlen(label)), GL_UNSIGNED_BYTE, label);
}

float fDiff(float f1, float f2)
{
    if (f1 > f2) {
        return f1 - f2;
    } else {
        return f2 - f1;
    }
}

inline double ClipPoint_Intersect(const ClipPoint &clip, const Vector3 &point, VIEWTYPE viewtype, float scale)
{
    int nDim1 = (viewtype == YZ) ? 1 : 0;
    int nDim2 = (viewtype == XY) ? 1 : 2;
    double screenDistanceSquared(vector2_length_squared(Vector2(fDiff(clip.m_ptClip[nDim1], point[nDim1]) * scale,
                                                                fDiff(clip.m_ptClip[nDim2], point[nDim2]) * scale)));
    if (screenDistanceSquared < 8 * 8) {
        return screenDistanceSquared;
    }
    return FLT_MAX;
}

inline void
ClipPoint_testSelect(ClipPoint &clip, const Vector3 &point, VIEWTYPE viewtype, float scale, double &bestDistance,
                     ClipPoint *&bestClip)
{
    if (clip.Set()) {
        double distance = ClipPoint_Intersect(clip, point, viewtype, scale);
        if (distance < bestDistance) {
            bestDistance = distance;
            bestClip = &clip;
        }
    }
}

inline ClipPoint *GlobalClipPoints_Find(const Vector3 &point, VIEWTYPE viewtype, float scale)
{
    double bestDistance = FLT_MAX;
    ClipPoint *bestClip = 0;
    ClipPoint_testSelect(g_Clip1, point, viewtype, scale, bestDistance, bestClip);
    ClipPoint_testSelect(g_Clip2, point, viewtype, scale, bestDistance, bestClip);
    ClipPoint_testSelect(g_Clip3, point, viewtype, scale, bestDistance, bestClip);
    return bestClip;
}

inline void GlobalClipPoints_Draw(float scale)
{
    // Draw clip points
    if (g_Clip1.Set()) {
        g_Clip1.Draw(1, scale);
    }
    if (g_Clip2.Set()) {
        g_Clip2.Draw(2, scale);
    }
    if (g_Clip3.Set()) {
        g_Clip3.Draw(3, scale);
    }
}

inline bool GlobalClipPoints_valid()
{
    return g_Clip1.Set() && g_Clip2.Set();
}

void PlanePointsFromClipPoints(Vector3 planepts[3], const AABB &bounds, int viewtype)
{
    ASSERT_MESSAGE(GlobalClipPoints_valid(), "clipper points not initialised");
    planepts[0] = g_Clip1.m_ptClip;
    planepts[1] = g_Clip2.m_ptClip;
    planepts[2] = g_Clip3.m_ptClip;
    Vector3 maxs(vector3_added(bounds.origin, bounds.extents));
    Vector3 mins(vector3_subtracted(bounds.origin, bounds.extents));
    if (!g_Clip3.Set()) {
        int n = (viewtype == XY) ? 2 : (viewtype == YZ) ? 0 : 1;
        int x = (n == 0) ? 1 : 0;
        int y = (n == 2) ? 1 : 2;

        if (n == 1) { // on viewtype XZ, flip clip points
            planepts[0][n] = maxs[n];
            planepts[1][n] = maxs[n];
            planepts[2][x] = g_Clip1.m_ptClip[x];
            planepts[2][y] = g_Clip1.m_ptClip[y];
            planepts[2][n] = mins[n];
        } else {
            planepts[0][n] = mins[n];
            planepts[1][n] = mins[n];
            planepts[2][x] = g_Clip1.m_ptClip[x];
            planepts[2][y] = g_Clip1.m_ptClip[y];
            planepts[2][n] = maxs[n];
        }
    }
}

void Clip_Update()
{
    Vector3 planepts[3];
    if (!GlobalClipPoints_valid()) {
        planepts[0] = Vector3(0, 0, 0);
        planepts[1] = Vector3(0, 0, 0);
        planepts[2] = Vector3(0, 0, 0);
        Scene_BrushSetClipPlane(GlobalSceneGraph(), Plane3(0, 0, 0, 0));
    } else {
        AABB bounds(Vector3(0, 0, 0), Vector3(64, 64, 64));
        PlanePointsFromClipPoints(planepts, bounds, g_clip_viewtype);
        if (g_bSwitch) {
            std::swap(planepts[0], planepts[1]);
        }
        Scene_BrushSetClipPlane(GlobalSceneGraph(), plane3_for_points(planepts[0], planepts[1], planepts[2]));
    }
    ClipperChangeNotify();
}

const char *Clip_getShader()
{
    return g_clip_useCaulk ? "textures/common/caulk" : TextureBrowser_GetSelectedShader(GlobalTextureBrowser());
}

void Clip()
{
    if (ClipMode() && GlobalClipPoints_valid()) {
        Vector3 planepts[3];
        AABB bounds(Vector3(0, 0, 0), Vector3(64, 64, 64));
        PlanePointsFromClipPoints(planepts, bounds, g_clip_viewtype);
        Scene_BrushSplitByPlane(GlobalSceneGraph(), planepts[0], planepts[1], planepts[2], Clip_getShader(),
                                (!g_bSwitch) ? eFront : eBack);
        g_Clip1.Reset();
        g_Clip2.Reset();
        g_Clip3.Reset();
        Clip_Update();
        ClipperChangeNotify();
    }
}

void SplitClip()
{
    if (ClipMode() && GlobalClipPoints_valid()) {
        Vector3 planepts[3];
        AABB bounds(Vector3(0, 0, 0), Vector3(64, 64, 64));
        PlanePointsFromClipPoints(planepts, bounds, g_clip_viewtype);
        Scene_BrushSplitByPlane(GlobalSceneGraph(), planepts[0], planepts[1], planepts[2], Clip_getShader(),
                                eFrontAndBack);
        g_Clip1.Reset();
        g_Clip2.Reset();
        g_Clip3.Reset();
        Clip_Update();
        ClipperChangeNotify();
    }
}

void FlipClip()
{
    g_bSwitch = !g_bSwitch;
    Clip_Update();
    ClipperChangeNotify();
}

void OnClipMode(bool enabled)
{
    g_Clip1.Reset();
    g_Clip2.Reset();
    g_Clip3.Reset();

    if (!enabled && g_pMovingClip) {
        g_pMovingClip = 0;
    }

    Clip_Update();
    ClipperChangeNotify();
}

bool ClipMode()
{
    return GlobalSelectionSystem().ManipulatorMode() == SelectionSystem::eClip;
}

void NewClipPoint(const Vector3 &point)
{
    if (g_Clip1.Set() == false) {
        g_Clip1.m_ptClip = point;
        g_Clip1.Set(true);
    } else if (g_Clip2.Set() == false) {
        g_Clip2.m_ptClip = point;
        g_Clip2.Set(true);
    } else if (g_Clip3.Set() == false) {
        g_Clip3.m_ptClip = point;
        g_Clip3.Set(true);
    } else {
        g_Clip1.Reset();
        g_Clip2.Reset();
        g_Clip3.Reset();
        g_Clip1.m_ptClip = point;
        g_Clip1.Set(true);
    }

    Clip_Update();
    ClipperChangeNotify();
}


struct xywindow_globals_private_t {
    bool d_showgrid;

    // these are in the View > Show menu with Show coordinates
    bool show_names;
    bool show_coordinates;
    bool show_angles;
    bool show_outline;
    bool show_axis;

    bool d_show_work;

    bool show_blocks;
    int blockSize;

    bool m_bCamXYUpdate;
    bool m_bChaseMouse;
    bool m_bSizePaint;

    xywindow_globals_private_t() :
            d_showgrid(true),

            show_names(false),
            show_coordinates(true),
            show_angles(true),
            show_outline(false),
            show_axis(true),

            d_show_work(false),

            show_blocks(false),

            m_bCamXYUpdate(true),
            m_bChaseMouse(true),
            m_bSizePaint(true)
    {
    }

};

xywindow_globals_t g_xywindow_globals;
xywindow_globals_private_t g_xywindow_globals_private;

const unsigned int RAD_NONE = 0x00;
const unsigned int RAD_SHIFT = 0x01;
const unsigned int RAD_ALT = 0x02;
const unsigned int RAD_CONTROL = 0x04;
const unsigned int RAD_PRESS = 0x08;
const unsigned int RAD_LBUTTON = 0x10;
const unsigned int RAD_MBUTTON = 0x20;
const unsigned int RAD_RBUTTON = 0x40;

inline ButtonIdentifier button_for_flags(unsigned int flags)
{
    if (flags & RAD_LBUTTON) {
        return c_buttonLeft;
    }
    if (flags & RAD_RBUTTON) {
        return c_buttonRight;
    }
    if (flags & RAD_MBUTTON) {
        return c_buttonMiddle;
    }
    return c_buttonInvalid;
}

inline ModifierFlags modifiers_for_flags(unsigned int flags)
{
    ModifierFlags modifiers = c_modifierNone;
    if (flags & RAD_SHIFT) {
        modifiers |= c_modifierShift;
    }
    if (flags & RAD_CONTROL) {
        modifiers |= c_modifierControl;
    }
    if (flags & RAD_ALT) {
        modifiers |= c_modifierAlt;
    }
    return modifiers;
}

inline unsigned int buttons_for_button_and_modifiers(ButtonIdentifier button, ModifierFlags flags)
{
    unsigned int buttons = 0;

    switch (button.get()) {
        case ButtonEnumeration::INVALID:
            break;
        case ButtonEnumeration::LEFT:
            buttons |= RAD_LBUTTON;
            break;
        case ButtonEnumeration::MIDDLE:
            buttons |= RAD_MBUTTON;
            break;
        case ButtonEnumeration::RIGHT:
            buttons |= RAD_RBUTTON;
            break;
    }

    if (bitfield_enabled(flags, c_modifierControl)) {
        buttons |= RAD_CONTROL;
    }

    if (bitfield_enabled(flags, c_modifierShift)) {
        buttons |= RAD_SHIFT;
    }

    if (bitfield_enabled(flags, c_modifierAlt)) {
        buttons |= RAD_ALT;
    }

    return buttons;
}

inline unsigned int buttons_for_event_button(GdkEventButton *event)
{
    unsigned int flags = 0;

    switch (event->button) {
        case 1:
            flags |= RAD_LBUTTON;
            break;
        case 2:
            flags |= RAD_MBUTTON;
            break;
        case 3:
            flags |= RAD_RBUTTON;
            break;
    }

    if ((event->state & GDK_CONTROL_MASK) != 0) {
        flags |= RAD_CONTROL;
    }

    if ((event->state & GDK_SHIFT_MASK) != 0) {
        flags |= RAD_SHIFT;
    }

    if ((event->state & GDK_MOD1_MASK) != 0) {
        flags |= RAD_ALT;
    }

    return flags;
}

inline unsigned int buttons_for_state(guint state)
{
    unsigned int flags = 0;

    if ((state & GDK_BUTTON1_MASK) != 0) {
        flags |= RAD_LBUTTON;
    }

    if ((state & GDK_BUTTON2_MASK) != 0) {
        flags |= RAD_MBUTTON;
    }

    if ((state & GDK_BUTTON3_MASK) != 0) {
        flags |= RAD_RBUTTON;
    }

    if ((state & GDK_CONTROL_MASK) != 0) {
        flags |= RAD_CONTROL;
    }

    if ((state & GDK_SHIFT_MASK) != 0) {
        flags |= RAD_SHIFT;
    }

    if ((state & GDK_MOD1_MASK) != 0) {
        flags |= RAD_ALT;
    }

    return flags;
}


void XYWnd::SetScale(float f)
{
    m_fScale = f;
    updateProjection();
    updateModelview();
    XYWnd_Update(*this);
}

void XYWnd_ZoomIn(XYWnd *xy)
{
    float max_scale = 64;
    float scale = xy->Scale() * 5.0f / 4.0f;
    if (scale > max_scale) {
        if (xy->Scale() != max_scale) {
            xy->SetScale(max_scale);
        }
    } else {
        xy->SetScale(scale);
    }
}


// NOTE: the zoom out factor is 4/5, we could think about customizing it
//  we don't go below a zoom factor corresponding to 10% of the max world size
//  (this has to be computed against the window size)
void XYWnd_ZoomOut(XYWnd *xy)
{
    float min_scale = MIN(xy->Width(), xy->Height()) / (1.1f * (g_MaxWorldCoord - g_MinWorldCoord));
    float scale = xy->Scale() * 4.0f / 5.0f;
    if (scale < min_scale) {
        if (xy->Scale() != min_scale) {
            xy->SetScale(min_scale);
        }
    } else {
        xy->SetScale(scale);
    }
}

VIEWTYPE GlobalXYWnd_getCurrentViewType()
{
    ASSERT_NOTNULL(g_pParentWnd);
    ASSERT_NOTNULL(g_pParentWnd->ActiveXY());
    return g_pParentWnd->ActiveXY()->GetViewType();
}

// =============================================================================
// variables

bool g_bCrossHairs = false;

ui::Menu XYWnd::m_mnuDrop(ui::null);

// this is disabled, and broken
// http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=394
#if 0
                                                                                                                        void WXY_Print(){
	long width, height;
	width = g_pParentWnd->ActiveXY()->Width();
	height = g_pParentWnd->ActiveXY()->Height();
	unsigned char* img;
	const char* filename;

	filename = ui::file_dialog( MainFrame_getWindow( ), FALSE, "Save Image", 0, FILTER_BMP );
	if ( !filename ) {
		return;
	}

	g_pParentWnd->ActiveXY()->MakeCurrent();
	img = (unsigned char*)malloc( width * height * 3 );
	glReadPixels( 0,0,width,height,GL_RGB,GL_UNSIGNED_BYTE,img );

	FILE *fp;
	fp = fopen( filename, "wb" );
	if ( fp ) {
		unsigned short bits;
		unsigned long cmap, bfSize;

		bits = 24;
		cmap = 0;
		bfSize = 54 + width * height * 3;

		long byteswritten = 0;
		long pixoff = 54 + cmap * 4;
		short res = 0;
		char m1 = 'B', m2 = 'M';
		fwrite( &m1, 1, 1, fp );      byteswritten++; // B
		fwrite( &m2, 1, 1, fp );      byteswritten++; // M
		fwrite( &bfSize, 4, 1, fp );  byteswritten += 4; // bfSize
		fwrite( &res, 2, 1, fp );     byteswritten += 2; // bfReserved1
		fwrite( &res, 2, 1, fp );     byteswritten += 2; // bfReserved2
		fwrite( &pixoff, 4, 1, fp );  byteswritten += 4; // bfOffBits

		unsigned long biSize = 40, compress = 0, size = 0;
		long pixels = 0;
		unsigned short planes = 1;
		fwrite( &biSize, 4, 1, fp );  byteswritten += 4; // biSize
		fwrite( &width, 4, 1, fp );   byteswritten += 4; // biWidth
		fwrite( &height, 4, 1, fp );  byteswritten += 4; // biHeight
		fwrite( &planes, 2, 1, fp );  byteswritten += 2; // biPlanes
		fwrite( &bits, 2, 1, fp );    byteswritten += 2; // biBitCount
		fwrite( &compress, 4, 1, fp ); byteswritten += 4; // biCompression
		fwrite( &size, 4, 1, fp );    byteswritten += 4; // biSizeImage
		fwrite( &pixels, 4, 1, fp );  byteswritten += 4; // biXPelsPerMeter
		fwrite( &pixels, 4, 1, fp );  byteswritten += 4; // biYPelsPerMeter
		fwrite( &cmap, 4, 1, fp );    byteswritten += 4; // biClrUsed
		fwrite( &cmap, 4, 1, fp );    byteswritten += 4; // biClrImportant

		unsigned long widthDW = ( ( ( width * 24 ) + 31 ) / 32 * 4 );
		long row, row_size = width * 3;
		for ( row = 0; row < height; row++ )
		{
			unsigned char* buf = img + row * row_size;

			// write a row
			int col;
			for ( col = 0; col < row_size; col += 3 )
			{
				putc( buf[col + 2], fp );
				putc( buf[col + 1], fp );
				putc( buf[col], fp );
			}
			byteswritten += row_size;

			unsigned long count;
			for ( count = row_size; count < widthDW; count++ )
			{
				putc( 0, fp ); // dummy
				byteswritten++;
			}
		}

		fclose( fp );
	}

	free( img );
}
#endif


#include "timer.h"

Timer g_chasemouse_timer;

void XYWnd::ChaseMouse()
{
    float multiplier = g_chasemouse_timer.elapsed_msec() / 10.0f;
    Scroll(float_to_integer(multiplier * m_chasemouse_delta_x), float_to_integer(multiplier * -m_chasemouse_delta_y));

    //globalOutputStream() << "chasemouse: multiplier=" << multiplier << " x=" << m_chasemouse_delta_x << " y=" << m_chasemouse_delta_y << '\n';

    XY_MouseMoved(m_chasemouse_current_x, m_chasemouse_current_y, getButtonState());
    g_chasemouse_timer.start();
}

gboolean xywnd_chasemouse(gpointer data)
{
    reinterpret_cast<XYWnd *>( data )->ChaseMouse();
    return TRUE;
}

inline const int &min_int(const int &left, const int &right)
{
    return std::min(left, right);
}

bool XYWnd::chaseMouseMotion(int pointx, int pointy)
{
    m_chasemouse_delta_x = 0;
    m_chasemouse_delta_y = 0;

    if (g_xywindow_globals_private.m_bChaseMouse && getButtonState() == RAD_LBUTTON) {
        const int epsilon = 16;

        if (pointx < epsilon) {
            m_chasemouse_delta_x = std::max(pointx, 0) - epsilon;
        } else if ((pointx - m_nWidth) > -epsilon) {
            m_chasemouse_delta_x = min_int((pointx - m_nWidth), 0) + epsilon;
        }

        if (pointy < epsilon) {
            m_chasemouse_delta_y = std::max(pointy, 0) - epsilon;
        } else if ((pointy - m_nHeight) > -epsilon) {
            m_chasemouse_delta_y = min_int((pointy - m_nHeight), 0) + epsilon;
        }

        if (m_chasemouse_delta_y != 0 || m_chasemouse_delta_x != 0) {
            //globalOutputStream() << "chasemouse motion: x=" << pointx << " y=" << pointy << "... ";
            m_chasemouse_current_x = pointx;
            m_chasemouse_current_y = pointy;
            if (m_chasemouse_handler == 0) {
                //globalOutputStream() << "chasemouse timer start... ";
                g_chasemouse_timer.start();
                m_chasemouse_handler = g_idle_add(xywnd_chasemouse, this);
            }
            return true;
        } else {
            if (m_chasemouse_handler != 0) {
                //globalOutputStream() << "chasemouse cancel\n";
                g_source_remove(m_chasemouse_handler);
                m_chasemouse_handler = 0;
            }
        }
    } else {
        if (m_chasemouse_handler != 0) {
            //globalOutputStream() << "chasemouse cancel\n";
            g_source_remove(m_chasemouse_handler);
            m_chasemouse_handler = 0;
        }
    }
    return false;
}

// =============================================================================
// XYWnd class
Shader *XYWnd::m_state_selected = 0;

void xy_update_xor_rectangle(XYWnd &self, rect_t area)
{
    if (self.GetWidget().visible()) {
        self.m_XORRectangle.set(rectangle_from_area(area.min, area.max, self.Width(), self.Height()));
    }
}

gboolean xywnd_button_press(ui::Widget widget, GdkEventButton *event, XYWnd *xywnd)
{
    if (event->type == GDK_BUTTON_PRESS) {
        g_pParentWnd->SetActiveXY(xywnd);

        xywnd->ButtonState_onMouseDown(buttons_for_event_button(event));

        xywnd->onMouseDown(WindowVector(event->x, event->y), button_for_button(event->button),
                           modifiers_for_state(event->state));
    }
    return FALSE;
}

gboolean xywnd_button_release(ui::Widget widget, GdkEventButton *event, XYWnd *xywnd)
{
    if (event->type == GDK_BUTTON_RELEASE) {
        xywnd->XY_MouseUp(static_cast<int>( event->x ), static_cast<int>( event->y ), buttons_for_event_button(event));

        xywnd->ButtonState_onMouseUp(buttons_for_event_button(event));
    }
    return FALSE;
}

gboolean xywnd_focus_in(ui::Widget widget, GdkEventFocus *event, XYWnd *xywnd)
{
    if (event->type == GDK_FOCUS_CHANGE) {
        if (event->in) {
            g_pParentWnd->SetActiveXY(xywnd);
        }
    }
    return FALSE;
}

void xywnd_motion(gdouble x, gdouble y, guint state, void *data)
{
    if (reinterpret_cast<XYWnd *>( data )->chaseMouseMotion(static_cast<int>( x ), static_cast<int>( y ))) {
        return;
    }
    reinterpret_cast<XYWnd *>( data )->XY_MouseMoved(static_cast<int>( x ), static_cast<int>( y ),
                                                     buttons_for_state(state));
}

gboolean xywnd_wheel_scroll(ui::Widget widget, GdkEventScroll *event, XYWnd *xywnd)
{
    if (event->direction == GDK_SCROLL_UP) {
        XYWnd_ZoomIn(xywnd);
    } else if (event->direction == GDK_SCROLL_DOWN) {
        XYWnd_ZoomOut(xywnd);
    }
    return FALSE;
}

gboolean xywnd_size_allocate(ui::Widget widget, GtkAllocation *allocation, XYWnd *xywnd)
{
    xywnd->m_nWidth = allocation->width;
    xywnd->m_nHeight = allocation->height;
    xywnd->updateProjection();
    xywnd->m_window_observer->onSizeChanged(xywnd->Width(), xywnd->Height());
    return FALSE;
}

gboolean xywnd_expose(ui::Widget widget, GdkEventExpose *event, XYWnd *xywnd)
{
    if (glwidget_make_current(xywnd->GetWidget()) != FALSE) {
        if (Map_Valid(g_map) && ScreenUpdates_Enabled()) {
            GlobalOpenGL_debugAssertNoErrors();
            xywnd->XY_Draw();
            GlobalOpenGL_debugAssertNoErrors();

            xywnd->m_XORRectangle.set(rectangle_t());
        }
        glwidget_swap_buffers(xywnd->GetWidget());
    }
    return FALSE;
}


void XYWnd_CameraMoved(XYWnd &xywnd)
{
    if (g_xywindow_globals_private.m_bCamXYUpdate) {
        XYWnd_Update(xywnd);
    }
}

XYWnd::XYWnd() :
        m_gl_widget(glwidget_new(FALSE)),
        m_deferredDraw(WidgetQueueDrawCaller(m_gl_widget)),
        m_deferred_motion(xywnd_motion, this),
        m_parent(ui::null),
        m_window_observer(NewWindowObserver()),
        m_XORRectangle(m_gl_widget),
        m_chasemouse_handler(0)
{
    m_bActive = false;
    m_buttonstate = 0;

    m_bNewBrushDrag = false;
    m_move_started = false;
    m_zoom_started = false;

    m_nWidth = 0;
    m_nHeight = 0;

    m_vOrigin[0] = 0;
    m_vOrigin[1] = 20;
    m_vOrigin[2] = 46;
    m_fScale = 1;
    m_viewType = XY;

    m_backgroundActivated = false;
    m_alpha = 1.0f;
    m_xmin = 0.0f;
    m_ymin = 0.0f;
    m_xmax = 0.0f;
    m_ymax = 0.0f;

    m_entityCreate = false;

    m_mnuDrop = ui::Menu(ui::null);

    GlobalWindowObservers_add(m_window_observer);
    GlobalWindowObservers_connectWidget(m_gl_widget);

    m_window_observer->setRectangleDrawCallback(ReferenceCaller<XYWnd, void(rect_t), xy_update_xor_rectangle>(*this));
    m_window_observer->setView(m_view);

    g_object_ref(m_gl_widget._handle);

    gtk_widget_set_events(m_gl_widget,
                          GDK_DESTROY | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
                          GDK_POINTER_MOTION_MASK | GDK_SCROLL_MASK);
    gtk_widget_set_can_focus(m_gl_widget, true);

    m_sizeHandler = m_gl_widget.connect("size_allocate", G_CALLBACK(xywnd_size_allocate), this);
    m_exposeHandler = m_gl_widget.on_render(G_CALLBACK(xywnd_expose), this);

    m_gl_widget.connect("button_press_event", G_CALLBACK(xywnd_button_press), this);
    m_gl_widget.connect("button_release_event", G_CALLBACK(xywnd_button_release), this);
    m_gl_widget.connect("focus_in_event", G_CALLBACK(xywnd_focus_in), this);
    m_gl_widget.connect("motion_notify_event", G_CALLBACK(DeferredMotion::gtk_motion), &m_deferred_motion);

    m_gl_widget.connect("scroll_event", G_CALLBACK(xywnd_wheel_scroll), this);

    Map_addValidCallback(g_map, DeferredDrawOnMapValidChangedCaller(m_deferredDraw));

    updateProjection();
    updateModelview();

    AddSceneChangeCallback(ReferenceCaller<XYWnd, void(), &XYWnd_Update>(*this));
    AddCameraMovedCallback(ReferenceCaller<XYWnd, void(), &XYWnd_CameraMoved>(*this));

    PressedButtons_connect(g_pressedButtons, m_gl_widget);

    onMouseDown.connectLast(makeSignalHandler3(MouseDownCaller(), *this));
}

XYWnd::~XYWnd()
{
    onDestroyed();

    if (m_mnuDrop) {
        m_mnuDrop.destroy();
        m_mnuDrop = ui::Menu(ui::null);
    }

    g_signal_handler_disconnect(G_OBJECT(m_gl_widget), m_sizeHandler);
    g_signal_handler_disconnect(G_OBJECT(m_gl_widget), m_exposeHandler);

    m_gl_widget.unref();

    m_window_observer->release();
}

void XYWnd::captureStates()
{
    m_state_selected = GlobalShaderCache().capture("$XY_OVERLAY");
}

void XYWnd::releaseStates()
{
    GlobalShaderCache().release("$XY_OVERLAY");
}

const Vector3 &XYWnd::GetOrigin()
{
    return m_vOrigin;
}

void XYWnd::SetOrigin(const Vector3 &origin)
{
    m_vOrigin = origin;
    updateModelview();
}

void XYWnd::Scroll(int x, int y)
{
    int nDim1 = (m_viewType == YZ) ? 1 : 0;
    int nDim2 = (m_viewType == XY) ? 1 : 2;
    m_vOrigin[nDim1] += x / m_fScale;
    m_vOrigin[nDim2] += y / m_fScale;
    updateModelview();
    queueDraw();
}

unsigned int Clipper_buttons()
{
    return RAD_LBUTTON;
}

void XYWnd::DropClipPoint(int pointx, int pointy)
{
    Vector3 point;

    XY_ToPoint(pointx, pointy, point);

    Vector3 mid;
    Select_GetMid(mid);
    g_clip_viewtype = static_cast<VIEWTYPE>( GetViewType());
    const int nDim = (g_clip_viewtype == YZ) ? 0 : ((g_clip_viewtype == XZ) ? 1 : 2);
    point[nDim] = mid[nDim];
    vector3_snap(point, GetSnapGridSize());
    NewClipPoint(point);
}

void XYWnd::Clipper_OnLButtonDown(int x, int y)
{
    Vector3 mousePosition;
    XY_ToPoint(x, y, mousePosition);
    g_pMovingClip = GlobalClipPoints_Find(mousePosition, (VIEWTYPE) m_viewType, m_fScale);
    if (!g_pMovingClip) {
        DropClipPoint(x, y);
    }
}

void XYWnd::Clipper_OnLButtonUp(int x, int y)
{
    if (g_pMovingClip) {
        g_pMovingClip = 0;
    }
}

void XYWnd::Clipper_OnMouseMoved(int x, int y)
{
    if (g_pMovingClip) {
        XY_ToPoint(x, y, g_pMovingClip->m_ptClip);
        XY_SnapToGrid(g_pMovingClip->m_ptClip);
        Clip_Update();
        ClipperChangeNotify();
    }
}

void XYWnd::Clipper_Crosshair_OnMouseMoved(int x, int y)
{
    Vector3 mousePosition;
    XY_ToPoint(x, y, mousePosition);
    if (ClipMode() && GlobalClipPoints_Find(mousePosition, (VIEWTYPE) m_viewType, m_fScale) != 0) {
        GdkCursor *cursor;
        cursor = gdk_cursor_new(GDK_CROSSHAIR);
        gdk_window_set_cursor(gtk_widget_get_window(m_gl_widget), cursor);
        gdk_cursor_unref(cursor);
    } else {
        gdk_window_set_cursor(gtk_widget_get_window(m_gl_widget), 0);
    }
}

unsigned int MoveCamera_buttons()
{
    return RAD_CONTROL | (g_glwindow_globals.m_nMouseType == ETwoButton ? RAD_RBUTTON : RAD_MBUTTON);
}

void XYWnd_PositionCamera(XYWnd *xywnd, int x, int y, CamWnd &camwnd)
{
    Vector3 origin(Camera_getOrigin(camwnd));
    xywnd->XY_ToPoint(x, y, origin);
    xywnd->XY_SnapToGrid(origin);
    Camera_setOrigin(camwnd, origin);
}

unsigned int OrientCamera_buttons()
{
    if (g_glwindow_globals.m_nMouseType == ETwoButton) {
        return RAD_RBUTTON | RAD_SHIFT | RAD_CONTROL;
    }
    return RAD_MBUTTON;
}

void XYWnd_OrientCamera(XYWnd *xywnd, int x, int y, CamWnd &camwnd)
{
    Vector3 point = g_vector3_identity;
    xywnd->XY_ToPoint(x, y, point);
    xywnd->XY_SnapToGrid(point);
    vector3_subtract(point, Camera_getOrigin(camwnd));

    int n1 = (xywnd->GetViewType() == XY) ? 1 : 2;
    int n2 = (xywnd->GetViewType() == YZ) ? 1 : 0;
    int nAngle = (xywnd->GetViewType() == XY) ? CAMERA_YAW : CAMERA_PITCH;
    if (point[n1] || point[n2]) {
        Vector3 angles(Camera_getAngles(camwnd));
        angles[nAngle] = static_cast<float>( radians_to_degrees(atan2(point[n1], point[n2])));
        Camera_setAngles(camwnd, angles);
    }
}

/*
   ==============
   NewBrushDrag
   ==============
 */
unsigned int NewBrushDrag_buttons()
{
    return RAD_LBUTTON;
}

void XYWnd::NewBrushDrag_Begin(int x, int y)
{
    m_NewBrushDrag = 0;
    m_nNewBrushPressx = x;
    m_nNewBrushPressy = y;

    m_bNewBrushDrag = true;
    GlobalUndoSystem().start();
}

void XYWnd::NewBrushDrag_End(int x, int y)
{
    if (m_NewBrushDrag != 0) {
        GlobalUndoSystem().finish("brushDragNew");
    }
}

void XYWnd::NewBrushDrag(int x, int y)
{
    Vector3 mins, maxs;
    XY_ToPoint(m_nNewBrushPressx, m_nNewBrushPressy, mins);
    XY_SnapToGrid(mins);
    XY_ToPoint(x, y, maxs);
    XY_SnapToGrid(maxs);

    int nDim = (m_viewType == XY) ? 2 : (m_viewType == YZ) ? 0 : 1;

    mins[nDim] = float_snapped(Select_getWorkZone().d_work_min[nDim], GetSnapGridSize());
    maxs[nDim] = float_snapped(Select_getWorkZone().d_work_max[nDim], GetSnapGridSize());

    if (maxs[nDim] <= mins[nDim]) {
        maxs[nDim] = mins[nDim] + GetGridSize();
    }

    for (int i = 0; i < 3; i++) {
        if (mins[i] == maxs[i]) {
            return; // don't create a degenerate brush
        }
        if (mins[i] > maxs[i]) {
            float temp = mins[i];
            mins[i] = maxs[i];
            maxs[i] = temp;
        }
    }

    if (m_NewBrushDrag == 0) {
        NodeSmartReference node(GlobalBrushCreator().createBrush());
        Node_getTraversable(Map_FindOrInsertWorldspawn(g_map))->insert(node);

        scene::Path brushpath(makeReference(GlobalSceneGraph().root()));
        brushpath.push(makeReference(*Map_GetWorldspawn(g_map)));
        brushpath.push(makeReference(node.get()));
        selectPath(brushpath, true);

        m_NewBrushDrag = node.get_pointer();
    }

    // d1223m
    //Scene_BrushResize_Selected(GlobalSceneGraph(), aabb_for_minmax(mins, maxs), TextureBrowser_GetSelectedShader(GlobalTextureBrowser()));
    Scene_BrushResize_Selected(GlobalSceneGraph(), aabb_for_minmax(mins, maxs),
                               g_brush_always_caulk ?
                               "textures/common/caulk" : TextureBrowser_GetSelectedShader(GlobalTextureBrowser()));
}

void entitycreate_activated(ui::Widget item)
{
    scene::Node *world_node = Map_FindWorldspawn(g_map);
    const char *entity_name = gtk_label_get_text(GTK_LABEL(gtk_bin_get_child(GTK_BIN(item))));

    if (!(world_node && string_equal(entity_name, "worldspawn"))) {
        g_pParentWnd->ActiveXY()->OnEntityCreate(entity_name);
    } else {
        GlobalRadiant().m_pfnMessageBox(MainFrame_getWindow(), "There's already a worldspawn in your map!"
                                                "",
                                        "Info",
                                        eMB_OK,
                                        eMB_ICONDEFAULT);
    }
}

void EntityClassMenu_addItem(ui::Menu menu, const char *name)
{
    auto item = ui::MenuItem(name);
    item.connect("activate", G_CALLBACK(entitycreate_activated), item);
    item.show();
    menu_add_item(menu, item);
}

class EntityClassMenuInserter : public EntityClassVisitor {
    typedef std::pair<ui::Menu, CopiedString> MenuPair;
    typedef std::vector<MenuPair> MenuStack;
    MenuStack m_stack;
    CopiedString m_previous;
public:
    EntityClassMenuInserter(ui::Menu menu)
    {
        m_stack.reserve(2);
        m_stack.push_back(MenuPair(menu, ""));
    }

    ~EntityClassMenuInserter()
    {
        if (!string_empty(m_previous.c_str())) {
            addItem(m_previous.c_str(), "");
        }
    }

    void visit(EntityClass *e)
    {
        ASSERT_MESSAGE(!string_empty(e->name()), "entity-class has no name");
        if (!string_empty(m_previous.c_str())) {
            addItem(m_previous.c_str(), e->name());
        }
        m_previous = e->name();
    }

    void pushMenu(const CopiedString &name)
    {
        auto item = ui::MenuItem(name.c_str());
        item.show();
        m_stack.back().first.add(item);

        auto submenu = ui::Menu(ui::New);
        gtk_menu_item_set_submenu(item, submenu);

        m_stack.push_back(MenuPair(submenu, name));
    }

    void popMenu()
    {
        m_stack.pop_back();
    }

    void addItem(const char *name, const char *next)
    {
        const char *underscore = strchr(name, '_');

        if (underscore != 0 && underscore != name) {
            bool nextEqual = string_equal_n(name, next, (underscore + 1) - name);
            const char *parent = m_stack.back().second.c_str();

            if (!string_empty(parent)
                && string_length(parent) == std::size_t(underscore - name)
                && string_equal_n(name, parent, underscore - name)) { // this is a child
            } else if (nextEqual) {
                if (m_stack.size() == 2) {
                    popMenu();
                }
                pushMenu(CopiedString(StringRange(name, underscore)));
            } else if (m_stack.size() == 2) {
                popMenu();
            }
        } else if (m_stack.size() == 2) {
            popMenu();
        }

        EntityClassMenu_addItem(m_stack.back().first, name);
    }
};

void XYWnd::OnContextMenu()
{
    if (g_xywindow_globals.m_bRightClick == false) {
        return;
    }

    if (!m_mnuDrop) { // first time, load it up
        auto menu = m_mnuDrop = ui::Menu(ui::New);

        EntityClassMenuInserter inserter(menu);
        GlobalEntityClassManager().forEach(inserter);
    }

    gtk_menu_popup(m_mnuDrop, 0, 0, 0, 0, 1, GDK_CURRENT_TIME);
}

FreezePointer g_xywnd_freezePointer;

unsigned int Move_buttons()
{
    return RAD_RBUTTON;
}

void XYWnd_moveDelta(int x, int y, unsigned int state, void *data)
{
    reinterpret_cast<XYWnd *>( data )->EntityCreate_MouseMove(x, y);
    reinterpret_cast<XYWnd *>( data )->Scroll(-x, y);
}

gboolean XYWnd_Move_focusOut(ui::Widget widget, GdkEventFocus *event, XYWnd *xywnd)
{
    xywnd->Move_End();
    return FALSE;
}

void XYWnd::Move_Begin()
{
    if (m_move_started) {
        Move_End();
    }
    m_move_started = true;
    g_xywnd_freezePointer.freeze_pointer(m_parent ? m_parent : MainFrame_getWindow(), XYWnd_moveDelta, this);
    m_move_focusOut = m_gl_widget.connect("focus_out_event", G_CALLBACK(XYWnd_Move_focusOut), this);
}

void XYWnd::Move_End()
{
    m_move_started = false;
    g_xywnd_freezePointer.unfreeze_pointer(m_parent ? m_parent : MainFrame_getWindow());
    g_signal_handler_disconnect(G_OBJECT(m_gl_widget), m_move_focusOut);
}

unsigned int Zoom_buttons()
{
    return RAD_RBUTTON | RAD_SHIFT;
}

int g_dragZoom = 0;

void XYWnd_zoomDelta(int x, int y, unsigned int state, void *data)
{
    if (y != 0) {
        g_dragZoom += y;

        while (abs(g_dragZoom) > 8) {
            if (g_dragZoom > 0) {
                XYWnd_ZoomOut(reinterpret_cast<XYWnd *>( data ));
                g_dragZoom -= 8;
            } else {
                XYWnd_ZoomIn(reinterpret_cast<XYWnd *>( data ));
                g_dragZoom += 8;
            }
        }
    }
}

gboolean XYWnd_Zoom_focusOut(ui::Widget widget, GdkEventFocus *event, XYWnd *xywnd)
{
    xywnd->Zoom_End();
    return FALSE;
}

void XYWnd::Zoom_Begin()
{
    if (m_zoom_started) {
        Zoom_End();
    }
    m_zoom_started = true;
    g_dragZoom = 0;
    g_xywnd_freezePointer.freeze_pointer(m_parent ? m_parent : MainFrame_getWindow(), XYWnd_zoomDelta, this);
    m_zoom_focusOut = m_gl_widget.connect("focus_out_event", G_CALLBACK(XYWnd_Zoom_focusOut), this);
}

void XYWnd::Zoom_End()
{
    m_zoom_started = false;
    g_xywnd_freezePointer.unfreeze_pointer(m_parent ? m_parent : MainFrame_getWindow());
    g_signal_handler_disconnect(G_OBJECT(m_gl_widget), m_zoom_focusOut);
}

// makes sure the selected brush or camera is in view
void XYWnd::PositionView(const Vector3 &position)
{
    int nDim1 = (m_viewType == YZ) ? 1 : 0;
    int nDim2 = (m_viewType == XY) ? 1 : 2;

    m_vOrigin[nDim1] = position[nDim1];
    m_vOrigin[nDim2] = position[nDim2];

    updateModelview();

    XYWnd_Update(*this);
}

void XYWnd::SetViewType(VIEWTYPE viewType)
{
    m_viewType = viewType;
    updateModelview();

    if (m_parent) {
        gtk_window_set_title(m_parent, ViewType_getTitle(m_viewType));
    }
}


inline WindowVector WindowVector_forInteger(int x, int y)
{
    return WindowVector(static_cast<float>( x ), static_cast<float>( y ));
}

void XYWnd::mouseDown(const WindowVector &position, ButtonIdentifier button, ModifierFlags modifiers)
{
    XY_MouseDown(static_cast<int>( position.x()), static_cast<int>( position.y()),
                 buttons_for_button_and_modifiers(button, modifiers));
}

void XYWnd::XY_MouseDown(int x, int y, unsigned int buttons)
{
    if (buttons == Move_buttons()) {
        Move_Begin();
        EntityCreate_MouseDown(x, y);
    } else if (buttons == Zoom_buttons()) {
        Zoom_Begin();
    } else if (ClipMode() && buttons == Clipper_buttons()) {
        Clipper_OnLButtonDown(x, y);
    } else if (buttons == NewBrushDrag_buttons() && GlobalSelectionSystem().countSelected() == 0) {
        NewBrushDrag_Begin(x, y);
    }
        // control mbutton = move camera
    else if (buttons == MoveCamera_buttons()) {
        XYWnd_PositionCamera(this, x, y, *g_pParentWnd->GetCamWnd());
    }
        // mbutton = angle camera
    else if (buttons == OrientCamera_buttons()) {
        XYWnd_OrientCamera(this, x, y, *g_pParentWnd->GetCamWnd());
    } else {
        m_window_observer->onMouseDown(WindowVector_forInteger(x, y), button_for_flags(buttons),
                                       modifiers_for_flags(buttons));
    }
}

void XYWnd::XY_MouseUp(int x, int y, unsigned int buttons)
{
    if (m_move_started) {
        Move_End();
        EntityCreate_MouseUp(x, y);
    } else if (m_zoom_started) {
        Zoom_End();
    } else if (ClipMode() && buttons == Clipper_buttons()) {
        Clipper_OnLButtonUp(x, y);
    } else if (m_bNewBrushDrag) {
        m_bNewBrushDrag = false;
        NewBrushDrag_End(x, y);
    } else {
        m_window_observer->onMouseUp(WindowVector_forInteger(x, y), button_for_flags(buttons),
                                     modifiers_for_flags(buttons));
    }
}

void XYWnd::XY_MouseMoved(int x, int y, unsigned int buttons)
{
    // rbutton = drag xy origin
    if (m_move_started) {
    }
        // zoom in/out
    else if (m_zoom_started) {
    } else if (ClipMode() && g_pMovingClip != 0) {
        Clipper_OnMouseMoved(x, y);
    }
        // lbutton without selection = drag new brush
    else if (m_bNewBrushDrag) {
        NewBrushDrag(x, y);
    }

        // control mbutton = move camera
    else if (getButtonState() == MoveCamera_buttons()) {
        XYWnd_PositionCamera(this, x, y, *g_pParentWnd->GetCamWnd());
    }

        // mbutton = angle camera
    else if (getButtonState() == OrientCamera_buttons()) {
        XYWnd_OrientCamera(this, x, y, *g_pParentWnd->GetCamWnd());
    } else {
        m_window_observer->onMouseMotion(WindowVector_forInteger(x, y), modifiers_for_flags(buttons));

        m_mousePosition[0] = m_mousePosition[1] = m_mousePosition[2] = 0.0;
        XY_ToPoint(x, y, m_mousePosition);
        XY_SnapToGrid(m_mousePosition);

        StringOutputStream status(64);
        status << "x:: " << FloatFormat(m_mousePosition[0], 6, 1)
               << "  y:: " << FloatFormat(m_mousePosition[1], 6, 1)
               << "  z:: " << FloatFormat(m_mousePosition[2], 6, 1);
        g_pParentWnd->SetStatusText(g_pParentWnd->m_position_status, status.c_str());

        if (g_bCrossHairs) {
            XYWnd_Update(*this);
        }

        Clipper_Crosshair_OnMouseMoved(x, y);
    }
}

void XYWnd::EntityCreate_MouseDown(int x, int y)
{
    m_entityCreate = true;
    m_entityCreate_x = x;
    m_entityCreate_y = y;
}

void XYWnd::EntityCreate_MouseMove(int x, int y)
{
    if (m_entityCreate && (m_entityCreate_x != x || m_entityCreate_y != y)) {
        m_entityCreate = false;
    }
}

void XYWnd::EntityCreate_MouseUp(int x, int y)
{
    if (m_entityCreate) {
        m_entityCreate = false;
        OnContextMenu();
    }
}

inline float screen_normalised(int pos, unsigned int size)
{
    return ((2.0f * pos) / size) - 1.0f;
}

inline float normalised_to_world(float normalised, float world_origin, float normalised2world_scale)
{
    return world_origin + normalised * normalised2world_scale;
}


// TTimo: watch it, this doesn't init one of the 3 coords
void XYWnd::XY_ToPoint(int x, int y, Vector3 &point)
{
    float normalised2world_scale_x = m_nWidth / 2 / m_fScale;
    float normalised2world_scale_y = m_nHeight / 2 / m_fScale;
    if (m_viewType == XY) {
        point[0] = normalised_to_world(screen_normalised(x, m_nWidth), m_vOrigin[0], normalised2world_scale_x);
        point[1] = normalised_to_world(-screen_normalised(y, m_nHeight), m_vOrigin[1], normalised2world_scale_y);
    } else if (m_viewType == YZ) {
        point[1] = normalised_to_world(screen_normalised(x, m_nWidth), m_vOrigin[1], normalised2world_scale_x);
        point[2] = normalised_to_world(-screen_normalised(y, m_nHeight), m_vOrigin[2], normalised2world_scale_y);
    } else {
        point[0] = normalised_to_world(screen_normalised(x, m_nWidth), m_vOrigin[0], normalised2world_scale_x);
        point[2] = normalised_to_world(-screen_normalised(y, m_nHeight), m_vOrigin[2], normalised2world_scale_y);
    }
}

void XYWnd::XY_SnapToGrid(Vector3 &point)
{
    if (m_viewType == XY) {
        point[0] = float_snapped(point[0], GetSnapGridSize());
        point[1] = float_snapped(point[1], GetSnapGridSize());
    } else if (m_viewType == YZ) {
        point[1] = float_snapped(point[1], GetSnapGridSize());
        point[2] = float_snapped(point[2], GetSnapGridSize());
    } else {
        point[0] = float_snapped(point[0], GetSnapGridSize());
        point[2] = float_snapped(point[2], GetSnapGridSize());
    }
}

void XYWnd::XY_LoadBackgroundImage(const char *name)
{
    const char *relative = path_make_relative(name, GlobalFileSystem().findRoot(name));
    if (relative == name) {
        globalOutputStream() << "WARNING: could not extract the relative path, using full path instead\n";
    }

    char fileNameWithoutExt[512];
    strncpy(fileNameWithoutExt, relative, sizeof(fileNameWithoutExt) - 1);
    fileNameWithoutExt[512 - 1] = '\0';
    fileNameWithoutExt[strlen(fileNameWithoutExt) - 4] = '\0';

    Image *image = QERApp_LoadImage(0, fileNameWithoutExt);
    if (!image) {
        globalOutputStream() << "Could not load texture " << fileNameWithoutExt << "\n";
        return;
    }
    g_pParentWnd->ActiveXY()->m_tex = (qtexture_t *) malloc(sizeof(qtexture_t));
    LoadTextureRGBA(g_pParentWnd->ActiveXY()->XYWnd::m_tex, image->getRGBAPixels(), image->getWidth(),
                    image->getHeight());
    globalOutputStream() << "Loaded background texture " << relative << "\n";
    g_pParentWnd->ActiveXY()->m_backgroundActivated = true;

    int m_ix, m_iy;
    switch (g_pParentWnd->ActiveXY()->m_viewType) {
        case XY:
            m_ix = 0;
            m_iy = 1;
            break;
        case XZ:
            m_ix = 0;
            m_iy = 2;
            break;
        case YZ:
            m_ix = 1;
            m_iy = 2;
            break;
    }

    Vector3 min, max;
    Select_GetBounds(min, max);
    g_pParentWnd->ActiveXY()->m_xmin = min[m_ix];
    g_pParentWnd->ActiveXY()->m_ymin = min[m_iy];
    g_pParentWnd->ActiveXY()->m_xmax = max[m_ix];
    g_pParentWnd->ActiveXY()->m_ymax = max[m_iy];
}

void XYWnd::XY_DisableBackground(void)
{
    g_pParentWnd->ActiveXY()->m_backgroundActivated = false;
    if (g_pParentWnd->ActiveXY()->m_tex) {
        free(g_pParentWnd->ActiveXY()->m_tex);
    }
    g_pParentWnd->ActiveXY()->m_tex = NULL;
}

void WXY_BackgroundSelect(void)
{
    bool brushesSelected = Scene_countSelectedBrushes(GlobalSceneGraph()) != 0;
    if (!brushesSelected) {
        ui::alert(ui::root, "You have to select some brushes to get the bounding box for.\n",
                  "No selection", ui::alert_type::OK, ui::alert_icon::Error);
        return;
    }

    const char *filename = MainFrame_getWindow().file_dialog(TRUE, "Background Image", NULL, NULL);
    g_pParentWnd->ActiveXY()->XY_DisableBackground();
    if (filename) {
        g_pParentWnd->ActiveXY()->XY_LoadBackgroundImage(filename);
    }
}

/*
   ============================================================================

   DRAWING

   ============================================================================
 */

/*
   ==============
   XY_DrawGrid
   ==============
 */

double two_to_the_power(int power)
{
    return pow(2.0f, power);
}

void XYWnd::XY_DrawAxis(void)
{
    if (g_xywindow_globals_private.show_axis) {
        const char g_AxisName[3] = {'X', 'Y', 'Z'};
        const int nDim1 = (m_viewType == YZ) ? 1 : 0;
        const int nDim2 = (m_viewType == XY) ? 1 : 2;
        const int w = (m_nWidth / 2 / m_fScale);
        const int h = (m_nHeight / 2 / m_fScale);

        const Vector3 &colourX = (m_viewType == YZ) ? g_xywindow_globals.AxisColorY : g_xywindow_globals.AxisColorX;
        const Vector3 &colourY = (m_viewType == XY) ? g_xywindow_globals.AxisColorY : g_xywindow_globals.AxisColorZ;

        // draw two lines with corresponding axis colors to highlight current view
        // horizontal line: nDim1 color
        glLineWidth(2);
        glBegin(GL_LINES);
        glColor3fv(vector3_to_array(colourX));
        glVertex2f(m_vOrigin[nDim1] - w + 40 / m_fScale, m_vOrigin[nDim2] + h - 45 / m_fScale);
        glVertex2f(m_vOrigin[nDim1] - w + 65 / m_fScale, m_vOrigin[nDim2] + h - 45 / m_fScale);
        glVertex2f(0, 0);
        glVertex2f(32 / m_fScale, 0);
        glColor3fv(vector3_to_array(colourY));
        glVertex2f(m_vOrigin[nDim1] - w + 40 / m_fScale, m_vOrigin[nDim2] + h - 45 / m_fScale);
        glVertex2f(m_vOrigin[nDim1] - w + 40 / m_fScale, m_vOrigin[nDim2] + h - 20 / m_fScale);
        glVertex2f(0, 0);
        glVertex2f(0, 32 / m_fScale);
        glEnd();
        glLineWidth(1);
        // now print axis symbols
        glColor3fv(vector3_to_array(colourX));
        glRasterPos2f(m_vOrigin[nDim1] - w + 55 / m_fScale, m_vOrigin[nDim2] + h - 55 / m_fScale);
        GlobalOpenGL().drawChar(g_AxisName[nDim1]);
        glRasterPos2f(28 / m_fScale, -10 / m_fScale);
        GlobalOpenGL().drawChar(g_AxisName[nDim1]);
        glColor3fv(vector3_to_array(colourY));
        glRasterPos2f(m_vOrigin[nDim1] - w + 25 / m_fScale, m_vOrigin[nDim2] + h - 30 / m_fScale);
        GlobalOpenGL().drawChar(g_AxisName[nDim2]);
        glRasterPos2f(-10 / m_fScale, 28 / m_fScale);
        GlobalOpenGL().drawChar(g_AxisName[nDim2]);
    }
}

void XYWnd::XY_DrawBackground(void)
{
    glPushAttrib(GL_ALL_ATTRIB_BITS);

    glEnable(GL_TEXTURE_2D);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);

    glPolygonMode(GL_FRONT, GL_FILL);

    glBindTexture(GL_TEXTURE_2D, m_tex->texture_number);
    glBegin(GL_QUADS);

    glColor4f(1.0, 1.0, 1.0, m_alpha);
    glTexCoord2f(0.0, 1.0);
    glVertex2f(m_xmin, m_ymin);

    glTexCoord2f(1.0, 1.0);
    glVertex2f(m_xmax, m_ymin);

    glTexCoord2f(1.0, 0.0);
    glVertex2f(m_xmax, m_ymax);

    glTexCoord2f(0.0, 0.0);
    glVertex2f(m_xmin, m_ymax);

    glEnd();
    glBindTexture(GL_TEXTURE_2D, 0);

    glPopAttrib();
}

void XYWnd::XY_DrawGrid(void)
{
    float x, y, xb, xe, yb, ye;
    float w, h, a;
    char text[32];
    float step, minor_step, stepx, stepy;
    step = minor_step = stepx = stepy = GetGridSize();

    int minor_power = Grid_getPower();
    int mask;

    while ((minor_step * m_fScale) <= 4.0f) { // make sure minor grid spacing is at least 4 pixels on the screen
        ++minor_power;
        minor_step *= 2;
    }
    int power = minor_power;
    while ((power % 3) != 0 ||
           (step * m_fScale) <= 32.0f) { // make sure major grid spacing is at least 32 pixels on the screen
        ++power;
        step = float(two_to_the_power(power));
    }
    mask = (1 << (power - minor_power)) - 1;
    while ((stepx * m_fScale) <= 32.0f) { // text step x must be at least 32
        stepx *= 2;
    }
    while ((stepy * m_fScale) <= 32.0f) { // text step y must be at least 32
        stepy *= 2;
    }

    a = ((GetSnapGridSize() > 0.0f) ? 1.0f : 0.3f);

    glDisable(GL_TEXTURE_2D);
    glDisable(GL_TEXTURE_1D);
    glDisable(GL_DEPTH_TEST);
    glDisable(GL_BLEND);
    glLineWidth(1);

    w = (m_nWidth / 2 / m_fScale);
    h = (m_nHeight / 2 / m_fScale);

    const int nDim1 = (m_viewType == YZ) ? 1 : 0;
    const int nDim2 = (m_viewType == XY) ? 1 : 2;

    xb = m_vOrigin[nDim1] - w;
    if (xb < region_mins[nDim1]) {
        xb = region_mins[nDim1];
    }
    xb = step * floor(xb / step);

    xe = m_vOrigin[nDim1] + w;
    if (xe > region_maxs[nDim1]) {
        xe = region_maxs[nDim1];
    }
    xe = step * ceil(xe / step);

    yb = m_vOrigin[nDim2] - h;
    if (yb < region_mins[nDim2]) {
        yb = region_mins[nDim2];
    }
    yb = step * floor(yb / step);

    ye = m_vOrigin[nDim2] + h;
    if (ye > region_maxs[nDim2]) {
        ye = region_maxs[nDim2];
    }
    ye = step * ceil(ye / step);

#define COLORS_DIFFER(a, b) \
    ( ( a )[0] != ( b )[0] || \
      ( a )[1] != ( b )[1] || \
      ( a )[2] != ( b )[2] )

    // djbob
    // draw minor blocks
    if (g_xywindow_globals_private.d_showgrid || a < 1.0f) {
        if (a < 1.0f) {
            glEnable(GL_BLEND);
        }

        if (COLORS_DIFFER(g_xywindow_globals.color_gridminor, g_xywindow_globals.color_gridback)) {
            glColor4fv(vector4_to_array(Vector4(g_xywindow_globals.color_gridminor, a)));

            glBegin(GL_LINES);
            int i = 0;
            for (x = xb; x < xe; x += minor_step, ++i) {
                if ((i & mask) != 0) {
                    glVertex2f(x, yb);
                    glVertex2f(x, ye);
                }
            }
            i = 0;
            for (y = yb; y < ye; y += minor_step, ++i) {
                if ((i & mask) != 0) {
                    glVertex2f(xb, y);
                    glVertex2f(xe, y);
                }
            }
            glEnd();
        }

        // draw major blocks
        if (COLORS_DIFFER(g_xywindow_globals.color_gridmajor, g_xywindow_globals.color_gridminor)) {
            glColor4fv(vector4_to_array(Vector4(g_xywindow_globals.color_gridmajor, a)));

            glBegin(GL_LINES);
            for (x = xb; x <= xe; x += step) {
                glVertex2f(x, yb);
                glVertex2f(x, ye);
            }
            for (y = yb; y <= ye; y += step) {
                glVertex2f(xb, y);
                glVertex2f(xe, y);
            }
            glEnd();
        }

        if (a < 1.0f) {
            glDisable(GL_BLEND);
        }
    }

    // draw coordinate text if needed
    if (g_xywindow_globals_private.show_coordinates) {
        glColor4fv(vector4_to_array(Vector4(g_xywindow_globals.color_gridtext, 1.0f)));
        float offx = m_vOrigin[nDim2] + h - (4 + GlobalOpenGL().m_font->getPixelAscent()) / m_fScale;
        float offy = m_vOrigin[nDim1] - w + 4 / m_fScale;
        for (x = xb - fmod(xb, stepx); x <= xe; x += stepx) {
            glRasterPos2f(x, offx);
            sprintf(text, "%g", x);
            GlobalOpenGL().drawString(text);
        }
        for (y = yb - fmod(yb, stepy); y <= ye; y += stepy) {
            glRasterPos2f(offy, y);
            sprintf(text, "%g", y);
            GlobalOpenGL().drawString(text);
        }

        if (Active()) {
            glColor3fv(vector3_to_array(g_xywindow_globals.color_viewname));
        }

        // we do this part (the old way) only if show_axis is disabled
        if (!g_xywindow_globals_private.show_axis) {
            glRasterPos2f(m_vOrigin[nDim1] - w + 35 / m_fScale, m_vOrigin[nDim2] + h - 20 / m_fScale);

            GlobalOpenGL().drawString(ViewType_getTitle(m_viewType));
        }
    }

    XYWnd::XY_DrawAxis();

    // show current work zone?
    // the work zone is used to place dropped points and brushes
    if (g_xywindow_globals_private.d_show_work) {
        glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
        glBegin(GL_LINES);
        glVertex2f(xb, Select_getWorkZone().d_work_min[nDim2]);
        glVertex2f(xe, Select_getWorkZone().d_work_min[nDim2]);
        glVertex2f(xb, Select_getWorkZone().d_work_max[nDim2]);
        glVertex2f(xe, Select_getWorkZone().d_work_max[nDim2]);
        glVertex2f(Select_getWorkZone().d_work_min[nDim1], yb);
        glVertex2f(Select_getWorkZone().d_work_min[nDim1], ye);
        glVertex2f(Select_getWorkZone().d_work_max[nDim1], yb);
        glVertex2f(Select_getWorkZone().d_work_max[nDim1], ye);
        glEnd();
    }
}

/*
   ==============
   XY_DrawBlockGrid
   ==============
 */
void XYWnd::XY_DrawBlockGrid()
{
    if (Map_FindWorldspawn(g_map) == 0) {
        return;
    }
    const char *value = Node_getEntity(*Map_GetWorldspawn(g_map))->getKeyValue("_blocksize");
    if (strlen(value)) {
        sscanf(value, "%i", &g_xywindow_globals_private.blockSize);
    }

    if (!g_xywindow_globals_private.blockSize || g_xywindow_globals_private.blockSize > 65536 ||
        g_xywindow_globals_private.blockSize < 1024) {
        // don't use custom blocksize if it is less than the default, or greater than the maximum world coordinate
        g_xywindow_globals_private.blockSize = 1024;
    }

    float x, y, xb, xe, yb, ye;
    float w, h;
    char text[32];

    glDisable(GL_TEXTURE_2D);
    glDisable(GL_TEXTURE_1D);
    glDisable(GL_DEPTH_TEST);
    glDisable(GL_BLEND);

    w = (m_nWidth / 2 / m_fScale);
    h = (m_nHeight / 2 / m_fScale);

    int nDim1 = (m_viewType == YZ) ? 1 : 0;
    int nDim2 = (m_viewType == XY) ? 1 : 2;

    xb = m_vOrigin[nDim1] - w;
    if (xb < region_mins[nDim1]) {
        xb = region_mins[nDim1];
    }
    xb = static_cast<float>( g_xywindow_globals_private.blockSize * floor(xb / g_xywindow_globals_private.blockSize));

    xe = m_vOrigin[nDim1] + w;
    if (xe > region_maxs[nDim1]) {
        xe = region_maxs[nDim1];
    }
    xe = static_cast<float>( g_xywindow_globals_private.blockSize * ceil(xe / g_xywindow_globals_private.blockSize));

    yb = m_vOrigin[nDim2] - h;
    if (yb < region_mins[nDim2]) {
        yb = region_mins[nDim2];
    }
    yb = static_cast<float>( g_xywindow_globals_private.blockSize * floor(yb / g_xywindow_globals_private.blockSize));

    ye = m_vOrigin[nDim2] + h;
    if (ye > region_maxs[nDim2]) {
        ye = region_maxs[nDim2];
    }
    ye = static_cast<float>( g_xywindow_globals_private.blockSize * ceil(ye / g_xywindow_globals_private.blockSize));

    // draw major blocks

    glColor3fv(vector3_to_array(g_xywindow_globals.color_gridblock));
    glLineWidth(2);

    glBegin(GL_LINES);

    for (x = xb; x <= xe; x += g_xywindow_globals_private.blockSize) {
        glVertex2f(x, yb);
        glVertex2f(x, ye);
    }

    if (m_viewType == XY) {
        for (y = yb; y <= ye; y += g_xywindow_globals_private.blockSize) {
            glVertex2f(xb, y);
            glVertex2f(xe, y);
        }
    }

    glEnd();
    glLineWidth(1);

    // draw coordinate text if needed

    if (m_viewType == XY && m_fScale > .1) {
        for (x = xb; x < xe; x += g_xywindow_globals_private.blockSize) {
            for (y = yb; y < ye; y += g_xywindow_globals_private.blockSize) {
                glRasterPos2f(x + (g_xywindow_globals_private.blockSize / 2),
                              y + (g_xywindow_globals_private.blockSize / 2));
                sprintf(text, "%i,%i", (int) floor(x / g_xywindow_globals_private.blockSize),
                        (int) floor(y / g_xywindow_globals_private.blockSize));
                GlobalOpenGL().drawString(text);
            }
        }
    }

    glColor4f(0, 0, 0, 0);
}

void XYWnd::DrawCameraIcon(const Vector3 &origin, const Vector3 &angles)
{
    float x, y, fov, box;
    double a;

    fov = 48 / m_fScale;
    box = 16 / m_fScale;

    if (m_viewType == XY) {
        x = origin[0];
        y = origin[1];
        a = degrees_to_radians(angles[CAMERA_YAW]);
    } else if (m_viewType == YZ) {
        x = origin[1];
        y = origin[2];
        a = degrees_to_radians(angles[CAMERA_PITCH]);
    } else {
        x = origin[0];
        y = origin[2];
        a = degrees_to_radians(angles[CAMERA_PITCH]);
    }

    glColor3f(0.0, 0.0, 1.0);
    glBegin(GL_LINE_STRIP);
    glVertex3f(x - box, y, 0);
    glVertex3f(x, y + (box / 2), 0);
    glVertex3f(x + box, y, 0);
    glVertex3f(x, y - (box / 2), 0);
    glVertex3f(x - box, y, 0);
    glVertex3f(x + box, y, 0);
    glEnd();

    glBegin(GL_LINE_STRIP);
    glVertex3f(x + static_cast<float>( fov * cos(a + c_pi / 4)), y + static_cast<float>( fov * sin(a + c_pi / 4)), 0);
    glVertex3f(x, y, 0);
    glVertex3f(x + static_cast<float>( fov * cos(a - c_pi / 4)), y + static_cast<float>( fov * sin(a - c_pi / 4)), 0);
    glEnd();

}


float Betwixt(float f1, float f2)
{
    if (f1 > f2) {
        return f2 + ((f1 - f2) / 2);
    } else {
        return f1 + ((f2 - f1) / 2);
    }
}


// can be greatly simplified but per usual i am in a hurry
// which is not an excuse, just a fact
void XYWnd::PaintSizeInfo(int nDim1, int nDim2, Vector3 &vMinBounds, Vector3 &vMaxBounds)
{
    if (vector3_equal(vMinBounds, vMaxBounds)) {
        return;
    }
    const char *g_pDimStrings[] = {"x:", "y:", "z:"};
    typedef const char *OrgStrings[2];
    const OrgStrings g_pOrgStrings[] = {{"x:", "y:",},
                                        {"x:", "z:",},
                                        {"y:", "z:",}};

    Vector3 vSize(vector3_subtracted(vMaxBounds, vMinBounds));

    glColor3f(g_xywindow_globals.color_selbrushes[0] * .65f,
              g_xywindow_globals.color_selbrushes[1] * .65f,
              g_xywindow_globals.color_selbrushes[2] * .65f);

    StringOutputStream dimensions(16);

    if (m_viewType == XY) {
        glBegin(GL_LINES);

        glVertex3f(vMinBounds[nDim1], vMinBounds[nDim2] - 6.0f / m_fScale, 0.0f);
        glVertex3f(vMinBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale, 0.0f);

        glVertex3f(vMinBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale, 0.0f);
        glVertex3f(vMaxBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale, 0.0f);

        glVertex3f(vMaxBounds[nDim1], vMinBounds[nDim2] - 6.0f / m_fScale, 0.0f);
        glVertex3f(vMaxBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale, 0.0f);


        glVertex3f(vMaxBounds[nDim1] + 6.0f / m_fScale, vMinBounds[nDim2], 0.0f);
        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, vMinBounds[nDim2], 0.0f);

        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, vMinBounds[nDim2], 0.0f);
        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, vMaxBounds[nDim2], 0.0f);

        glVertex3f(vMaxBounds[nDim1] + 6.0f / m_fScale, vMaxBounds[nDim2], 0.0f);
        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, vMaxBounds[nDim2], 0.0f);

        glEnd();

        glRasterPos3f(Betwixt(vMinBounds[nDim1], vMaxBounds[nDim1]), vMinBounds[nDim2] - 20.0f / m_fScale, 0.0f);
        dimensions << g_pDimStrings[nDim1] << vSize[nDim1];
        GlobalOpenGL().drawString(dimensions.c_str());
        dimensions.clear();

        glRasterPos3f(vMaxBounds[nDim1] + 16.0f / m_fScale, Betwixt(vMinBounds[nDim2], vMaxBounds[nDim2]), 0.0f);
        dimensions << g_pDimStrings[nDim2] << vSize[nDim2];
        GlobalOpenGL().drawString(dimensions.c_str());
        dimensions.clear();

        glRasterPos3f(vMinBounds[nDim1] + 4, vMaxBounds[nDim2] + 8 / m_fScale, 0.0f);
        dimensions << "(" << g_pOrgStrings[0][0] << vMinBounds[nDim1] << "  " << g_pOrgStrings[0][1]
                   << vMaxBounds[nDim2] << ")";
        GlobalOpenGL().drawString(dimensions.c_str());
    } else if (m_viewType == XZ) {
        glBegin(GL_LINES);

        glVertex3f(vMinBounds[nDim1], 0, vMinBounds[nDim2] - 6.0f / m_fScale);
        glVertex3f(vMinBounds[nDim1], 0, vMinBounds[nDim2] - 10.0f / m_fScale);

        glVertex3f(vMinBounds[nDim1], 0, vMinBounds[nDim2] - 10.0f / m_fScale);
        glVertex3f(vMaxBounds[nDim1], 0, vMinBounds[nDim2] - 10.0f / m_fScale);

        glVertex3f(vMaxBounds[nDim1], 0, vMinBounds[nDim2] - 6.0f / m_fScale);
        glVertex3f(vMaxBounds[nDim1], 0, vMinBounds[nDim2] - 10.0f / m_fScale);


        glVertex3f(vMaxBounds[nDim1] + 6.0f / m_fScale, 0, vMinBounds[nDim2]);
        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, 0, vMinBounds[nDim2]);

        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, 0, vMinBounds[nDim2]);
        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, 0, vMaxBounds[nDim2]);

        glVertex3f(vMaxBounds[nDim1] + 6.0f / m_fScale, 0, vMaxBounds[nDim2]);
        glVertex3f(vMaxBounds[nDim1] + 10.0f / m_fScale, 0, vMaxBounds[nDim2]);

        glEnd();

        glRasterPos3f(Betwixt(vMinBounds[nDim1], vMaxBounds[nDim1]), 0, vMinBounds[nDim2] - 20.0f / m_fScale);
        dimensions << g_pDimStrings[nDim1] << vSize[nDim1];
        GlobalOpenGL().drawString(dimensions.c_str());
        dimensions.clear();

        glRasterPos3f(vMaxBounds[nDim1] + 16.0f / m_fScale, 0, Betwixt(vMinBounds[nDim2], vMaxBounds[nDim2]));
        dimensions << g_pDimStrings[nDim2] << vSize[nDim2];
        GlobalOpenGL().drawString(dimensions.c_str());
        dimensions.clear();

        glRasterPos3f(vMinBounds[nDim1] + 4, 0, vMaxBounds[nDim2] + 8 / m_fScale);
        dimensions << "(" << g_pOrgStrings[1][0] << vMinBounds[nDim1] << "  " << g_pOrgStrings[1][1]
                   << vMaxBounds[nDim2] << ")";
        GlobalOpenGL().drawString(dimensions.c_str());
    } else {
        glBegin(GL_LINES);

        glVertex3f(0, vMinBounds[nDim1], vMinBounds[nDim2] - 6.0f / m_fScale);
        glVertex3f(0, vMinBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale);

        glVertex3f(0, vMinBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale);
        glVertex3f(0, vMaxBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale);

        glVertex3f(0, vMaxBounds[nDim1], vMinBounds[nDim2] - 6.0f / m_fScale);
        glVertex3f(0, vMaxBounds[nDim1], vMinBounds[nDim2] - 10.0f / m_fScale);


        glVertex3f(0, vMaxBounds[nDim1] + 6.0f / m_fScale, vMinBounds[nDim2]);
        glVertex3f(0, vMaxBounds[nDim1] + 10.0f / m_fScale, vMinBounds[nDim2]);

        glVertex3f(0, vMaxBounds[nDim1] + 10.0f / m_fScale, vMinBounds[nDim2]);
        glVertex3f(0, vMaxBounds[nDim1] + 10.0f / m_fScale, vMaxBounds[nDim2]);

        glVertex3f(0, vMaxBounds[nDim1] + 6.0f / m_fScale, vMaxBounds[nDim2]);
        glVertex3f(0, vMaxBounds[nDim1] + 10.0f / m_fScale, vMaxBounds[nDim2]);

        glEnd();

        glRasterPos3f(0, Betwixt(vMinBounds[nDim1], vMaxBounds[nDim1]), vMinBounds[nDim2] - 20.0f / m_fScale);
        dimensions << g_pDimStrings[nDim1] << vSize[nDim1];
        GlobalOpenGL().drawString(dimensions.c_str());
        dimensions.clear();

        glRasterPos3f(0, vMaxBounds[nDim1] + 16.0f / m_fScale, Betwixt(vMinBounds[nDim2], vMaxBounds[nDim2]));
        dimensions << g_pDimStrings[nDim2] << vSize[nDim2];
        GlobalOpenGL().drawString(dimensions.c_str());
        dimensions.clear();

        glRasterPos3f(0, vMinBounds[nDim1] + 4.0f, vMaxBounds[nDim2] + 8 / m_fScale);
        dimensions << "(" << g_pOrgStrings[2][0] << vMinBounds[nDim1] << "  " << g_pOrgStrings[2][1]
                   << vMaxBounds[nDim2] << ")";
        GlobalOpenGL().drawString(dimensions.c_str());
    }
}

class XYRenderer : public Renderer {
    struct state_type {
        state_type() :
                m_highlight(0),
                m_state(0)
        {
        }

        unsigned int m_highlight;
        Shader *m_state;
    };

public:
    XYRenderer(RenderStateFlags globalstate, Shader *selected) :
            m_globalstate(globalstate),
            m_state_selected(selected)
    {
        ASSERT_NOTNULL(selected);
        m_state_stack.push_back(state_type());
    }

    void SetState(Shader *state, EStyle style)
    {
        ASSERT_NOTNULL(state);
        if (style == eWireframeOnly) {
            m_state_stack.back().m_state = state;
        }
    }

    EStyle getStyle() const
    {
        return eWireframeOnly;
    }

    void PushState()
    {
        m_state_stack.push_back(m_state_stack.back());
    }

    void PopState()
    {
        ASSERT_MESSAGE(!m_state_stack.empty(), "popping empty stack");
        m_state_stack.pop_back();
    }

    void Highlight(EHighlightMode mode, bool bEnable = true)
    {
        (bEnable)
        ? m_state_stack.back().m_highlight |= mode
        : m_state_stack.back().m_highlight &= ~mode;
    }

    void addRenderable(const OpenGLRenderable &renderable, const Matrix4 &localToWorld)
    {
        if (m_state_stack.back().m_highlight & ePrimitive) {
            m_state_selected->addRenderable(renderable, localToWorld);
        } else {
            m_state_stack.back().m_state->addRenderable(renderable, localToWorld);
        }
    }

    void render(const Matrix4 &modelview, const Matrix4 &projection)
    {
        GlobalShaderCache().render(m_globalstate, modelview, projection);
    }

private:
    std::vector<state_type> m_state_stack;
    RenderStateFlags m_globalstate;
    Shader *m_state_selected;
};

void XYWnd::updateProjection()
{
    m_projection[0] = 1.0f / static_cast<float>( m_nWidth / 2 );
    m_projection[5] = 1.0f / static_cast<float>( m_nHeight / 2 );
    m_projection[10] = 1.0f / (g_MaxWorldCoord * m_fScale);

    m_projection[12] = 0.0f;
    m_projection[13] = 0.0f;
    m_projection[14] = -1.0f;

    m_projection[1] =
    m_projection[2] =
    m_projection[3] =

    m_projection[4] =
    m_projection[6] =
    m_projection[7] =

    m_projection[8] =
    m_projection[9] =
    m_projection[11] = 0.0f;

    m_projection[15] = 1.0f;

    m_view.Construct(m_projection, m_modelview, m_nWidth, m_nHeight);
}

// note: modelview matrix must have a uniform scale, otherwise strange things happen when rendering the rotation manipulator.
void XYWnd::updateModelview()
{
    int nDim1 = (m_viewType == YZ) ? 1 : 0;
    int nDim2 = (m_viewType == XY) ? 1 : 2;

    // translation
    m_modelview[12] = -m_vOrigin[nDim1] * m_fScale;
    m_modelview[13] = -m_vOrigin[nDim2] * m_fScale;
    m_modelview[14] = g_MaxWorldCoord * m_fScale;

    // axis base
    switch (m_viewType) {
        case XY:
            m_modelview[0] = m_fScale;
            m_modelview[1] = 0;
            m_modelview[2] = 0;

            m_modelview[4] = 0;
            m_modelview[5] = m_fScale;
            m_modelview[6] = 0;

            m_modelview[8] = 0;
            m_modelview[9] = 0;
            m_modelview[10] = -m_fScale;
            break;
        case XZ:
            m_modelview[0] = m_fScale;
            m_modelview[1] = 0;
            m_modelview[2] = 0;

            m_modelview[4] = 0;
            m_modelview[5] = 0;
            m_modelview[6] = m_fScale;

            m_modelview[8] = 0;
            m_modelview[9] = m_fScale;
            m_modelview[10] = 0;
            break;
        case YZ:
            m_modelview[0] = 0;
            m_modelview[1] = 0;
            m_modelview[2] = -m_fScale;

            m_modelview[4] = m_fScale;
            m_modelview[5] = 0;
            m_modelview[6] = 0;

            m_modelview[8] = 0;
            m_modelview[9] = m_fScale;
            m_modelview[10] = 0;
            break;
    }

    m_modelview[3] = m_modelview[7] = m_modelview[11] = 0;
    m_modelview[15] = 1;

    m_view.Construct(m_projection, m_modelview, m_nWidth, m_nHeight);
}

/*
   ==============
   XY_Draw
   ==============
 */

//#define DBG_SCENEDUMP

void XYWnd::XY_Draw()
{
    //
    // clear
    //
    glViewport(0, 0, m_nWidth, m_nHeight);
    glClearColor(g_xywindow_globals.color_gridback[0],
                 g_xywindow_globals.color_gridback[1],
                 g_xywindow_globals.color_gridback[2], 0);

    glClear(GL_COLOR_BUFFER_BIT);

    //
    // set up viewpoint
    //

    glMatrixMode(GL_PROJECTION);
    glLoadMatrixf(reinterpret_cast<const float *>( &m_projection ));

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glScalef(m_fScale, m_fScale, 1);
    int nDim1 = (m_viewType == YZ) ? 1 : 0;
    int nDim2 = (m_viewType == XY) ? 1 : 2;
    glTranslatef(-m_vOrigin[nDim1], -m_vOrigin[nDim2], 0);

    glDisable(GL_LINE_STIPPLE);
    glLineWidth(1);
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    glDisableClientState(GL_NORMAL_ARRAY);
    glDisableClientState(GL_COLOR_ARRAY);
    glDisable(GL_TEXTURE_2D);
    glDisable(GL_LIGHTING);
    glDisable(GL_COLOR_MATERIAL);
    glDisable(GL_DEPTH_TEST);

    if (m_backgroundActivated) {
        XY_DrawBackground();
    }
    XY_DrawGrid();

    if (g_xywindow_globals_private.show_blocks) {
        XY_DrawBlockGrid();
    }

    glLoadMatrixf(reinterpret_cast<const float *>( &m_modelview ));

    unsigned int globalstate = RENDER_COLOURARRAY | RENDER_COLOURWRITE | RENDER_POLYGONSMOOTH | RENDER_LINESMOOTH;
    if (!g_xywindow_globals.m_bNoStipple) {
        globalstate |= RENDER_LINESTIPPLE;
    }

    {
        XYRenderer renderer(globalstate, m_state_selected);

        Scene_Render(renderer, m_view);

        GlobalOpenGL_debugAssertNoErrors();
        renderer.render(m_modelview, m_projection);
        GlobalOpenGL_debugAssertNoErrors();
    }

    glDepthMask(GL_FALSE);

    GlobalOpenGL_debugAssertNoErrors();

    glLoadMatrixf(reinterpret_cast<const float *>( &m_modelview ));

    GlobalOpenGL_debugAssertNoErrors();
    glDisable(GL_LINE_STIPPLE);
    GlobalOpenGL_debugAssertNoErrors();
    glLineWidth(1);
    GlobalOpenGL_debugAssertNoErrors();
    if (GlobalOpenGL().GL_1_3()) {
        glActiveTexture(GL_TEXTURE0);
        glClientActiveTexture(GL_TEXTURE0);
    }
    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
    GlobalOpenGL_debugAssertNoErrors();
    glDisableClientState(GL_NORMAL_ARRAY);
    GlobalOpenGL_debugAssertNoErrors();
    glDisableClientState(GL_COLOR_ARRAY);
    GlobalOpenGL_debugAssertNoErrors();
    glDisable(GL_TEXTURE_2D);
    GlobalOpenGL_debugAssertNoErrors();
    glDisable(GL_LIGHTING);
    GlobalOpenGL_debugAssertNoErrors();
    glDisable(GL_COLOR_MATERIAL);
    GlobalOpenGL_debugAssertNoErrors();

    GlobalOpenGL_debugAssertNoErrors();


    // size info
    if (g_xywindow_globals_private.m_bSizePaint && GlobalSelectionSystem().countSelected() != 0) {
        Vector3 min, max;
        Select_GetBounds(min, max);
        PaintSizeInfo(nDim1, nDim2, min, max);
    }

    if (g_bCrossHairs) {
        glColor4f(0.2f, 0.9f, 0.2f, 0.8f);
        glBegin(GL_LINES);
        if (m_viewType == XY) {
            glVertex2f(2.0f * g_MinWorldCoord, m_mousePosition[1]);
            glVertex2f(2.0f * g_MaxWorldCoord, m_mousePosition[1]);
            glVertex2f(m_mousePosition[0], 2.0f * g_MinWorldCoord);
            glVertex2f(m_mousePosition[0], 2.0f * g_MaxWorldCoord);
        } else if (m_viewType == YZ) {
            glVertex3f(m_mousePosition[0], 2.0f * g_MinWorldCoord, m_mousePosition[2]);
            glVertex3f(m_mousePosition[0], 2.0f * g_MaxWorldCoord, m_mousePosition[2]);
            glVertex3f(m_mousePosition[0], m_mousePosition[1], 2.0f * g_MinWorldCoord);
            glVertex3f(m_mousePosition[0], m_mousePosition[1], 2.0f * g_MaxWorldCoord);
        } else {
            glVertex3f(2.0f * g_MinWorldCoord, m_mousePosition[1], m_mousePosition[2]);
            glVertex3f(2.0f * g_MaxWorldCoord, m_mousePosition[1], m_mousePosition[2]);
            glVertex3f(m_mousePosition[0], m_mousePosition[1], 2.0f * g_MinWorldCoord);
            glVertex3f(m_mousePosition[0], m_mousePosition[1], 2.0f * g_MaxWorldCoord);
        }
        glEnd();
    }

    if (ClipMode()) {
        GlobalClipPoints_Draw(m_fScale);
    }

    GlobalOpenGL_debugAssertNoErrors();

    // reset modelview
    glLoadIdentity();
    glScalef(m_fScale, m_fScale, 1);
    glTranslatef(-m_vOrigin[nDim1], -m_vOrigin[nDim2], 0);

    DrawCameraIcon(Camera_getOrigin(*g_pParentWnd->GetCamWnd()), Camera_getAngles(*g_pParentWnd->GetCamWnd()));

    Feedback_draw2D(m_viewType);

    if (g_xywindow_globals_private.show_outline) {
        if (Active()) {
            glMatrixMode(GL_PROJECTION);
            glLoadIdentity();
            glOrtho(0, m_nWidth, 0, m_nHeight, 0, 1);

            glMatrixMode(GL_MODELVIEW);
            glLoadIdentity();

            // four view mode doesn't colorize
            if (g_pParentWnd->CurrentStyle() == MainFrame::eSplit) {
                glColor3fv(vector3_to_array(g_xywindow_globals.color_viewname));
            } else {
                switch (m_viewType) {
                    case YZ:
                        glColor3fv(vector3_to_array(g_xywindow_globals.AxisColorX));
                        break;
                    case XZ:
                        glColor3fv(vector3_to_array(g_xywindow_globals.AxisColorY));
                        break;
                    case XY:
                        glColor3fv(vector3_to_array(g_xywindow_globals.AxisColorZ));
                        break;
                }
            }
            glBegin(GL_LINE_LOOP);
            glVertex2f(0.5, 0.5);
            glVertex2f(m_nWidth - 0.5, 1);
            glVertex2f(m_nWidth - 0.5, m_nHeight - 0.5);
            glVertex2f(0.5, m_nHeight - 0.5);
            glEnd();
        }
    }

    GlobalOpenGL_debugAssertNoErrors();

    glFinish();
}

void XYWnd_MouseToPoint(XYWnd *xywnd, int x, int y, Vector3 &point)
{
    xywnd->XY_ToPoint(x, y, point);
    xywnd->XY_SnapToGrid(point);

    int nDim = (xywnd->GetViewType() == XY) ? 2 : (xywnd->GetViewType() == YZ) ? 0 : 1;
    float fWorkMid = float_mid(Select_getWorkZone().d_work_min[nDim], Select_getWorkZone().d_work_max[nDim]);
    point[nDim] = float_snapped(fWorkMid, GetGridSize());
}

void XYWnd::OnEntityCreate(const char *item)
{
    StringOutputStream command;
    command << "entityCreate -class " << item;
    UndoableCommand undo(command.c_str());
    Vector3 point;
    XYWnd_MouseToPoint(this, m_entityCreate_x, m_entityCreate_y, point);
    Entity_createFromSelection(item, point);
}


void GetFocusPosition(Vector3 &position)
{
    if (GlobalSelectionSystem().countSelected() != 0) {
        Select_GetMid(position);
    } else {
        position = Camera_getOrigin(*g_pParentWnd->GetCamWnd());
    }
}

void XYWnd_Focus(XYWnd *xywnd)
{
    Vector3 position;
    GetFocusPosition(position);
    xywnd->PositionView(position);
}

void XY_Split_Focus()
{
    Vector3 position;
    GetFocusPosition(position);
    if (g_pParentWnd->GetXYWnd()) {
        g_pParentWnd->GetXYWnd()->PositionView(position);
    }
    if (g_pParentWnd->GetXZWnd()) {
        g_pParentWnd->GetXZWnd()->PositionView(position);
    }
    if (g_pParentWnd->GetYZWnd()) {
        g_pParentWnd->GetYZWnd()->PositionView(position);
    }
}

void XY_Focus()
{
    if (g_pParentWnd->CurrentStyle() == MainFrame::eSplit) {
        // cannot do this in a split window
        // do something else that the user may want here
        XY_Split_Focus();
        return;
    }

    XYWnd *xywnd = g_pParentWnd->GetXYWnd();
    XYWnd_Focus(xywnd);
}

void XY_Top()
{
    if (g_pParentWnd->CurrentStyle() == MainFrame::eSplit || g_pParentWnd->CurrentStyle() == MainFrame::eFloating) {
        // cannot do this in a split window
        // do something else that the user may want here
        XY_Split_Focus();
        return;
    }

    XYWnd *xywnd = g_pParentWnd->GetXYWnd();
    xywnd->SetViewType(XY);
    XYWnd_Focus(xywnd);
}

void XY_Side()
{
    if (g_pParentWnd->CurrentStyle() == MainFrame::eSplit || g_pParentWnd->CurrentStyle() == MainFrame::eFloating) {
        // cannot do this in a split window
        // do something else that the user may want here
        XY_Split_Focus();
        return;
    }

    XYWnd *xywnd = g_pParentWnd->GetXYWnd();
    xywnd->SetViewType(XZ);
    XYWnd_Focus(xywnd);
}

void XY_Front()
{
    if (g_pParentWnd->CurrentStyle() == MainFrame::eSplit || g_pParentWnd->CurrentStyle() == MainFrame::eFloating) {
        // cannot do this in a split window
        // do something else that the user may want here
        XY_Split_Focus();
        return;
    }

    XYWnd *xywnd = g_pParentWnd->GetXYWnd();
    xywnd->SetViewType(YZ);
    XYWnd_Focus(xywnd);
}

void XY_Next()
{
    if (g_pParentWnd->CurrentStyle() == MainFrame::eSplit || g_pParentWnd->CurrentStyle() == MainFrame::eFloating) {
        // cannot do this in a split window
        // do something else that the user may want here
        XY_Split_Focus();
        return;
    }

    XYWnd *xywnd = g_pParentWnd->GetXYWnd();
    if (xywnd->GetViewType() == XY) {
        xywnd->SetViewType(XZ);
    } else if (xywnd->GetViewType() == XZ) {
        xywnd->SetViewType(YZ);
    } else {
        xywnd->SetViewType(XY);
    }
    XYWnd_Focus(xywnd);
}

void XY_Zoom100()
{
    if (g_pParentWnd->GetXYWnd()) {
        g_pParentWnd->GetXYWnd()->SetScale(1);
    }
    if (g_pParentWnd->GetXZWnd()) {
        g_pParentWnd->GetXZWnd()->SetScale(1);
    }
    if (g_pParentWnd->GetYZWnd()) {
        g_pParentWnd->GetYZWnd()->SetScale(1);
    }
}

void XY_ZoomIn()
{
    XYWnd_ZoomIn(g_pParentWnd->ActiveXY());
}

// NOTE: the zoom out factor is 4/5, we could think about customizing it
//  we don't go below a zoom factor corresponding to 10% of the max world size
//  (this has to be computed against the window size)
void XY_ZoomOut()
{
    XYWnd_ZoomOut(g_pParentWnd->ActiveXY());
}


void ToggleShowCrosshair()
{
    g_bCrossHairs ^= 1;
    XY_UpdateAllWindows();
}

void ToggleShowSizeInfo()
{
    g_xywindow_globals_private.m_bSizePaint = !g_xywindow_globals_private.m_bSizePaint;
    XY_UpdateAllWindows();
}

void ToggleShowGrid()
{
    g_xywindow_globals_private.d_showgrid = !g_xywindow_globals_private.d_showgrid;
    XY_UpdateAllWindows();
}

ToggleShown g_xy_top_shown(true);

void XY_Top_Shown_Construct(ui::Window parent)
{
    g_xy_top_shown.connect(parent);
}

ToggleShown g_yz_side_shown(false);

void YZ_Side_Shown_Construct(ui::Window parent)
{
    g_yz_side_shown.connect(parent);
}

ToggleShown g_xz_front_shown(false);

void XZ_Front_Shown_Construct(ui::Window parent)
{
    g_xz_front_shown.connect(parent);
}


class EntityClassMenu : public ModuleObserver {
    std::size_t m_unrealised;
public:
    EntityClassMenu() : m_unrealised(1)
    {
    }

    void realise()
    {
        if (--m_unrealised == 0) {
        }
    }

    void unrealise()
    {
        if (++m_unrealised == 1) {
            if (XYWnd::m_mnuDrop) {
                XYWnd::m_mnuDrop.destroy();
                XYWnd::m_mnuDrop = ui::Menu(ui::null);
            }
        }
    }
};

EntityClassMenu g_EntityClassMenu;


void ShowNamesToggle()
{
    GlobalEntityCreator().setShowNames(!GlobalEntityCreator().getShowNames());
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowNamesToggle> ShowNamesToggleCaller;

void ShowNamesExport(const Callback<void(bool)> &importer)
{
    importer(GlobalEntityCreator().getShowNames());
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowNamesExport> ShowNamesExportCaller;

void ShowAnglesToggle()
{
    GlobalEntityCreator().setShowAngles(!GlobalEntityCreator().getShowAngles());
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowAnglesToggle> ShowAnglesToggleCaller;

void ShowAnglesExport(const Callback<void(bool)> &importer)
{
    importer(GlobalEntityCreator().getShowAngles());
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowAnglesExport> ShowAnglesExportCaller;

void ShowBlocksToggle()
{
    g_xywindow_globals_private.show_blocks ^= 1;
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowBlocksToggle> ShowBlocksToggleCaller;

void ShowBlocksExport(const Callback<void(bool)> &importer)
{
    importer(g_xywindow_globals_private.show_blocks);
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowBlocksExport> ShowBlocksExportCaller;

void ShowCoordinatesToggle()
{
    g_xywindow_globals_private.show_coordinates ^= 1;
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowCoordinatesToggle> ShowCoordinatesToggleCaller;

void ShowCoordinatesExport(const Callback<void(bool)> &importer)
{
    importer(g_xywindow_globals_private.show_coordinates);
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowCoordinatesExport> ShowCoordinatesExportCaller;

void ShowOutlineToggle()
{
    g_xywindow_globals_private.show_outline ^= 1;
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowOutlineToggle> ShowOutlineToggleCaller;

void ShowOutlineExport(const Callback<void(bool)> &importer)
{
    importer(g_xywindow_globals_private.show_outline);
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowOutlineExport> ShowOutlineExportCaller;

void ShowAxesToggle()
{
    g_xywindow_globals_private.show_axis ^= 1;
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowAxesToggle> ShowAxesToggleCaller;

void ShowAxesExport(const Callback<void(bool)> &importer)
{
    importer(g_xywindow_globals_private.show_axis);
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowAxesExport> ShowAxesExportCaller;

void ShowWorkzoneToggle()
{
    g_xywindow_globals_private.d_show_work ^= 1;
    XY_UpdateAllWindows();
}

typedef FreeCaller<void(), ShowWorkzoneToggle> ShowWorkzoneToggleCaller;

void ShowWorkzoneExport(const Callback<void(bool)> &importer)
{
    importer(g_xywindow_globals_private.d_show_work);
}

typedef FreeCaller<void(const Callback<void(bool)> &), ShowWorkzoneExport> ShowWorkzoneExportCaller;

ShowNamesExportCaller g_show_names_caller;
Callback<void(const Callback<void(bool)> &)> g_show_names_callback(g_show_names_caller);
ToggleItem g_show_names(g_show_names_callback);

ShowAnglesExportCaller g_show_angles_caller;
Callback<void(const Callback<void(bool)> &)> g_show_angles_callback(g_show_angles_caller);
ToggleItem g_show_angles(g_show_angles_callback);

ShowBlocksExportCaller g_show_blocks_caller;
Callback<void(const Callback<void(bool)> &)> g_show_blocks_callback(g_show_blocks_caller);
ToggleItem g_show_blocks(g_show_blocks_callback);

ShowCoordinatesExportCaller g_show_coordinates_caller;
Callback<void(const Callback<void(bool)> &)> g_show_coordinates_callback(g_show_coordinates_caller);
ToggleItem g_show_coordinates(g_show_coordinates_callback);

ShowOutlineExportCaller g_show_outline_caller;
Callback<void(const Callback<void(bool)> &)> g_show_outline_callback(g_show_outline_caller);
ToggleItem g_show_outline(g_show_outline_callback);

ShowAxesExportCaller g_show_axes_caller;
Callback<void(const Callback<void(bool)> &)> g_show_axes_callback(g_show_axes_caller);
ToggleItem g_show_axes(g_show_axes_callback);

ShowWorkzoneExportCaller g_show_workzone_caller;
Callback<void(const Callback<void(bool)> &)> g_show_workzone_callback(g_show_workzone_caller);
ToggleItem g_show_workzone(g_show_workzone_callback);

void XYShow_registerCommands()
{
    GlobalToggles_insert("ShowAngles", ShowAnglesToggleCaller(), ToggleItem::AddCallbackCaller(g_show_angles));
    GlobalToggles_insert("ShowNames", ShowNamesToggleCaller(), ToggleItem::AddCallbackCaller(g_show_names));
    GlobalToggles_insert("ShowBlocks", ShowBlocksToggleCaller(), ToggleItem::AddCallbackCaller(g_show_blocks));
    GlobalToggles_insert("ShowCoordinates", ShowCoordinatesToggleCaller(),
                         ToggleItem::AddCallbackCaller(g_show_coordinates));
    GlobalToggles_insert("ShowWindowOutline", ShowOutlineToggleCaller(), ToggleItem::AddCallbackCaller(g_show_outline));
    GlobalToggles_insert("ShowAxes", ShowAxesToggleCaller(), ToggleItem::AddCallbackCaller(g_show_axes));
    GlobalToggles_insert("ShowWorkzone", ShowWorkzoneToggleCaller(), ToggleItem::AddCallbackCaller(g_show_workzone));
}

void XYWnd_registerShortcuts()
{
    command_connect_accelerator("ToggleCrosshairs");
    command_connect_accelerator("ToggleSizePaint");
}


void Orthographic_constructPreferences(PreferencesPage &page)
{
    page.appendCheckBox("", "Solid selection boxes", g_xywindow_globals.m_bNoStipple);
    page.appendCheckBox("", "Display size info", g_xywindow_globals_private.m_bSizePaint);
    page.appendCheckBox("", "Chase mouse during drags", g_xywindow_globals_private.m_bChaseMouse);
    page.appendCheckBox("", "Update views on camera move", g_xywindow_globals_private.m_bCamXYUpdate);
}

void Orthographic_constructPage(PreferenceGroup &group)
{
    PreferencesPage page(group.createPage("Orthographic", "Orthographic View Preferences"));
    Orthographic_constructPreferences(page);
}

void Orthographic_registerPreferencesPage()
{
    PreferencesDialog_addSettingsPage(makeCallbackF(Orthographic_constructPage));
}

void Clipper_constructPreferences(PreferencesPage &page)
{
    page.appendCheckBox("", "Clipper tool uses caulk", g_clip_useCaulk);
}

void Clipper_constructPage(PreferenceGroup &group)
{
    PreferencesPage page(group.createPage("Clipper", "Clipper Tool Settings"));
    Clipper_constructPreferences(page);
}

void Clipper_registerPreferencesPage()
{
    PreferencesDialog_addSettingsPage(makeCallbackF(Clipper_constructPage));
}


#include "preferencesystem.h"
#include "stringio.h"


struct ToggleShown_Bool {
    static void Export(const ToggleShown &self, const Callback<void(bool)> &returnz)
    {
        returnz(self.active());
    }

    static void Import(ToggleShown &self, bool value)
    {
        self.set(value);
    }
};


void XYWindow_Construct()
{
    GlobalCommands_insert("ToggleCrosshairs", makeCallbackF(ToggleShowCrosshair),
                          Accelerator('X', (GdkModifierType) GDK_SHIFT_MASK));
    GlobalCommands_insert("ToggleSizePaint", makeCallbackF(ToggleShowSizeInfo), Accelerator('J'));
    GlobalCommands_insert("ToggleGrid", makeCallbackF(ToggleShowGrid), Accelerator('0'));

    GlobalToggles_insert("ToggleView", ToggleShown::ToggleCaller(g_xy_top_shown),
                         ToggleItem::AddCallbackCaller(g_xy_top_shown.m_item),
                         Accelerator('V', (GdkModifierType) (GDK_SHIFT_MASK | GDK_CONTROL_MASK)));
    GlobalToggles_insert("ToggleSideView", ToggleShown::ToggleCaller(g_yz_side_shown),
                         ToggleItem::AddCallbackCaller(g_yz_side_shown.m_item));
    GlobalToggles_insert("ToggleFrontView", ToggleShown::ToggleCaller(g_xz_front_shown),
                         ToggleItem::AddCallbackCaller(g_xz_front_shown.m_item));
    GlobalCommands_insert("NextView", makeCallbackF(XY_Next), Accelerator(GDK_KEY_Tab,
                                                                          (GdkModifierType) GDK_CONTROL_MASK)); // fixme: doesn't show its shortcut
    GlobalCommands_insert("ZoomIn", makeCallbackF(XY_ZoomIn), Accelerator(GDK_KEY_Delete));
    GlobalCommands_insert("ZoomOut", makeCallbackF(XY_ZoomOut), Accelerator(GDK_KEY_Insert));
    GlobalCommands_insert("ViewTop", makeCallbackF(XY_Top), Accelerator(GDK_KEY_KP_Home));
    GlobalCommands_insert("ViewSide", makeCallbackF(XY_Side), Accelerator(GDK_KEY_KP_Page_Down));
    GlobalCommands_insert("ViewFront", makeCallbackF(XY_Front), Accelerator(GDK_KEY_KP_End));
    GlobalCommands_insert("Zoom100", makeCallbackF(XY_Zoom100));
    GlobalCommands_insert("CenterXYView", makeCallbackF(XY_Focus),
                          Accelerator(GDK_KEY_Tab, (GdkModifierType) (GDK_SHIFT_MASK | GDK_CONTROL_MASK)));

    GlobalPreferenceSystem().registerPreference("ClipCaulk", make_property_string(g_clip_useCaulk));

    GlobalPreferenceSystem().registerPreference("NewRightClick",
                                                make_property_string(g_xywindow_globals.m_bRightClick));
    GlobalPreferenceSystem().registerPreference("ChaseMouse",
                                                make_property_string(g_xywindow_globals_private.m_bChaseMouse));
    GlobalPreferenceSystem().registerPreference("SizePainting",
                                                make_property_string(g_xywindow_globals_private.m_bSizePaint));
    GlobalPreferenceSystem().registerPreference("NoStipple", make_property_string(g_xywindow_globals.m_bNoStipple));
    GlobalPreferenceSystem().registerPreference("SI_ShowCoords",
                                                make_property_string(g_xywindow_globals_private.show_coordinates));
    GlobalPreferenceSystem().registerPreference("SI_ShowOutlines",
                                                make_property_string(g_xywindow_globals_private.show_outline));
    GlobalPreferenceSystem().registerPreference("SI_ShowAxis",
                                                make_property_string(g_xywindow_globals_private.show_axis));
    GlobalPreferenceSystem().registerPreference("CamXYUpdate",
                                                make_property_string(g_xywindow_globals_private.m_bCamXYUpdate));
    GlobalPreferenceSystem().registerPreference("ShowWorkzone",
                                                make_property_string(g_xywindow_globals_private.d_show_work));

    GlobalPreferenceSystem().registerPreference("SI_AxisColors0", make_property_string(g_xywindow_globals.AxisColorX));
    GlobalPreferenceSystem().registerPreference("SI_AxisColors1", make_property_string(g_xywindow_globals.AxisColorY));
    GlobalPreferenceSystem().registerPreference("SI_AxisColors2", make_property_string(g_xywindow_globals.AxisColorZ));
    GlobalPreferenceSystem().registerPreference("SI_Colors1", make_property_string(g_xywindow_globals.color_gridback));
    GlobalPreferenceSystem().registerPreference("SI_Colors2", make_property_string(g_xywindow_globals.color_gridminor));
    GlobalPreferenceSystem().registerPreference("SI_Colors3", make_property_string(g_xywindow_globals.color_gridmajor));
    GlobalPreferenceSystem().registerPreference("SI_Colors6", make_property_string(g_xywindow_globals.color_gridblock));
    GlobalPreferenceSystem().registerPreference("SI_Colors7", make_property_string(g_xywindow_globals.color_gridtext));
    GlobalPreferenceSystem().registerPreference("SI_Colors8", make_property_string(g_xywindow_globals.color_brushes));
    GlobalPreferenceSystem().registerPreference("SI_Colors14",
                                                make_property_string(g_xywindow_globals.color_gridmajor_alt));


    GlobalPreferenceSystem().registerPreference("XZVIS", make_property_string<ToggleShown_Bool>(g_xz_front_shown));
    GlobalPreferenceSystem().registerPreference("YZVIS", make_property_string<ToggleShown_Bool>(g_yz_side_shown));

    Orthographic_registerPreferencesPage();
    Clipper_registerPreferencesPage();

    XYWnd::captureStates();
    GlobalEntityClassManager().attach(g_EntityClassMenu);
}

void XYWindow_Destroy()
{
    GlobalEntityClassManager().detach(g_EntityClassMenu);
    XYWnd::releaseStates();
}