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/*
* RenderArea.h
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ZOOMEDIT_GUI_RENDERAREA_H_
#define ZOOMEDIT_GUI_RENDERAREA_H_
#include <gtkmm/drawingarea.h>
#include <gtkmm/scrollbar.h>
#include <libglademm/xml.h>
#include <gtk/gtkgl.h>
namespace ZoomEdit {
namespace Gui {
class RenderArea : public Gtk::DrawingArea {
public:
RenderArea(BaseObjectType *cobject, const Glib::RefPtr<Gnome::Glade::Xml> &xml);
private:
static GdkGLConfig *glconfig;
Gtk::HScrollbar *hScrollbar;
Gtk::VScrollbar *vScrollbar;
float xCenter, yCenter;
int zoomLevel;
float scale;
void onRealize();
bool onConfigureEvent(GdkEventConfigure *event);
bool onExposeEvent(GdkEventExpose *event);
bool onScrollEvent(GdkEventScroll *event);
void zoom(int zoom, float x = 0.5f, float y = 0.5f);
void updateViewport();
void updateScrollbars(float x = 0.5f, float y = 0.5f);
void updateScrolling();
void drawGrid();
float getViewWidth() const {
return get_width()/scale;
}
float getViewHeight() const {
return get_height()/scale;
}
float getImageWidth() const {return 10;}
float getImageHeight() const {return 10;}
bool gdkGLBegin() {
GtkWidget *widget = GTK_WIDGET(gobj());
return gdk_gl_drawable_gl_begin(gtk_widget_get_gl_drawable(widget), gtk_widget_get_gl_context(widget));
}
void gdkSwapBuffers() {
gdk_gl_drawable_swap_buffers(gtk_widget_get_gl_drawable(GTK_WIDGET(gobj())));
}
void gdkGLEnd() {
gdk_gl_drawable_gl_end(gtk_widget_get_gl_drawable(GTK_WIDGET(gobj())));
}
};
}
}
#endif /*ZOOMEDIT_GUI_RENDERAREA_H_*/
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