--- /dev/null
+/*
+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
+*/
+
+//-----------------------------------------------------------------------------
+//
+// DESCRIPTION:
+// a class to provide basic services for 2D view of a world
+// window <-> local 2D space transforms
+// snap to grid
+// TODO: this one can be placed under an interface, and provided to the editor as a service
+
+#include "StdAfx.h"
+
+static void view_ZoomIn (GtkWidget* widget, gpointer data)
+{
+ ((C2DView*)data)->ZoomIn ();
+}
+
+static void view_ZoomOut (GtkWidget* widget, gpointer data)
+{
+ ((C2DView*)data)->ZoomOut ();
+}
+
+void C2DView::PreparePaint()
+{
+ g_QglTable.m_pfn_qglClearColor( 0, 0, 0, 0 );
+ g_QglTable.m_pfn_qglViewport( 0, 0, m_rect.right, m_rect.bottom );
+ g_QglTable.m_pfn_qglMatrixMode( GL_PROJECTION );
+ g_QglTable.m_pfn_qglLoadIdentity();
+ g_QglTable.m_pfn_qglOrtho( m_Mins[0], m_Maxs[0], m_Maxs[1], m_Mins[1], -1, 1 );
+}
+
+void C2DView::SpaceForWindow( float c[2], int x, int y)
+{
+ c[0] = ((float)(x))/((float)(m_rect.right-m_rect.left))*(m_Maxs[0]-m_Mins[0])+m_Mins[0];
+ c[1] = ((float)(y))/((float)(m_rect.bottom-m_rect.top))*(m_Maxs[1]-m_Mins[1])+m_Mins[1];
+}
+
+void C2DView::GridForWindow( float c[2], int x, int y)
+{
+ SpaceForWindow( c, x, y );
+ if ( !m_bDoGrid )
+ return;
+ c[0] /= m_GridStep[0];
+ c[1] /= m_GridStep[1];
+ c[0] = (float)floor( c[0] + 0.5f );
+ c[1] = (float)floor( c[1] + 0.5f );
+ c[0] *= m_GridStep[0];
+ c[1] *= m_GridStep[1];
+}
+
+void C2DView::WindowForSpace( int &x, int &y, const float c[2] )
+{
+ x = m_rect.left + (int)( ((float)(m_rect.right-m_rect.left))*(c[0]-m_Mins[0])/(m_Maxs[0]-m_Mins[0]) );
+ y = m_rect.top + (int)( ((float)(m_rect.bottom-m_rect.top))*(c[1]-m_Mins[1])/(m_Maxs[1]-m_Mins[1]) );
+}
+
+qboolean C2DView::DoesSelect( int x, int y, float c[2] )
+{
+ int xc,yc;
+ WindowForSpace( xc, yc, c );
+ if ( abs(xc-x)<=3 && abs(yc-y)<=3 )
+ return true;
+ return false;
+}
+
+void C2DView::ZoomIn()
+{
+ m_Mins[0] = 0.5f * ( m_Mins[0] - m_Center[0] ) + m_Center[0];
+ m_Mins[1] = 0.5f * ( m_Mins[1] - m_Center[1] ) + m_Center[1];
+ m_Maxs[0] = 0.5f * ( m_Maxs[0] - m_Center[0] ) + m_Center[0];
+ m_Maxs[1] = 0.5f * ( m_Maxs[1] - m_Center[1] ) + m_Center[1];
+ g_pToolWnd->Redraw ();
+}
+
+void C2DView::ZoomOut()
+{
+ m_Mins[0] = 2.0f * ( m_Mins[0] - m_Center[0] ) + m_Center[0];
+ m_Mins[1] = 2.0f * ( m_Mins[1] - m_Center[1] ) + m_Center[1];
+ m_Maxs[0] = 2.0f * ( m_Maxs[0] - m_Center[0] ) + m_Center[0];
+ m_Maxs[1] = 2.0f * ( m_Maxs[1] - m_Center[1] ) + m_Center[1];
+ g_pToolWnd->Redraw ();
+}
+
+bool C2DView::OnRButtonDown (int x, int y)
+{
+ if (ViewState == View_Idle)
+ {
+ m_xPosMove = x; // horizontal position of cursor
+ m_yPosMove = y; // vertical position of cursor
+ // store
+ m_MinsMove[0] = m_Mins[0]; m_MinsMove[1] = m_Mins[1];
+ m_MaxsMove[0] = m_Maxs[0]; m_MaxsMove[1] = m_Maxs[1];
+ ViewState = View_Move;
+ // set popup to true
+ m_bPopup = true;
+ return true;
+ }
+ return false;
+}
+
+bool C2DView::OnRButtonUp (int x, int y)
+{
+ if (ViewState == View_Move)
+ {
+ // maybe it's time for popup menu
+ if (m_bPopup)
+ {
+ GtkWidget *menu, *item;
+
+ menu = gtk_menu_new ();
+
+ item = gtk_menu_item_new_with_label ("Validate (RETURN)");
+ gtk_signal_connect (GTK_OBJECT (item), "activate", GTK_SIGNAL_FUNC (Textool_Validate), NULL);
+ gtk_widget_show (item);
+ gtk_menu_append (GTK_MENU (menu), item);
+
+ item = gtk_menu_item_new_with_label ("Zoom in (INSERT)");
+ gtk_signal_connect (GTK_OBJECT (item), "activate", GTK_SIGNAL_FUNC (view_ZoomIn), this);
+ gtk_widget_show (item);
+ gtk_menu_append (GTK_MENU (menu), item);
+
+ item = gtk_menu_item_new_with_label ("Zoom out (DELETE)");
+ gtk_signal_connect (GTK_OBJECT (item), "activate", GTK_SIGNAL_FUNC (view_ZoomOut), this);
+ gtk_widget_show (item);
+ gtk_menu_append (GTK_MENU (menu), item);
+
+ item = gtk_menu_item_new_with_label ("Cancel (ESC)");
+ gtk_signal_connect (GTK_OBJECT (item), "activate", GTK_SIGNAL_FUNC (Textool_Cancel), NULL);
+ gtk_widget_show (item);
+ gtk_menu_append (GTK_MENU (menu), item);
+
+ gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL, 1, GDK_CURRENT_TIME);
+ }
+
+ // back to Idle mode
+ ViewState = View_Idle;
+ return true;
+ }
+ return false;
+}
+
+bool C2DView::OnMouseMove (int xPos, int yPos)
+{
+ if (ViewState == View_Move)
+ {
+ float V[2];
+ // V is the offset
+ V[0] = ((float)( xPos - m_xPosMove )) * ( m_MaxsMove[0] - m_MinsMove[0] ) / ((float)( m_rect.left - m_rect.right ));
+ V[1] = ((float)( yPos - m_yPosMove )) * ( m_MaxsMove[1] - m_MinsMove[1] ) / ((float)( m_rect.top - m_rect.bottom ));
+ // update m_Mins m_Maxs and m_Center
+ m_Mins[0] = m_MinsMove[0] + V[0];
+ m_Mins[1] = m_MinsMove[1] + V[1];
+ m_Maxs[0] = m_MaxsMove[0] + V[0];
+ m_Maxs[1] = m_MaxsMove[1] + V[1];
+ m_Center[0] = 0.5f * ( m_Mins[0] + m_Maxs[0] );
+ m_Center[1] = 0.5f * ( m_Mins[1] + m_Maxs[1] );
+ // no popup menu if we moved
+ m_bPopup = false;
+ // send a repaint message
+ g_pToolWnd->Redraw ();
+ return true;
+ }
+ return false;
+}
+
+bool C2DView::OnKeyDown (char *s)
+{
+ if (ViewState == View_Idle)
+ {
+ if (!strcmp(s,"Insert"))
+ {
+ ZoomOut();
+ return true;
+ }
+ if (!strcmp(s,"Delete"))
+ {
+ ZoomIn();
+ return true;
+ }
+ }
+ return false;
+}
+