1 files changed, 57 insertions, 0 deletions
diff --git a/Drawer.h b/Drawer.h
new file mode 100644
index 0000000..4cc0e2b
--- /dev/null
+++ b/Drawer.h
@@ -0,0 +1,57 @@
+#ifndef DRAWER_H_
+#define DRAWER_H_
+
+#include <gtk/gtk.h>
+#include <gtk/gtkgl.h>
+
+
+class Window;
+
+
+class Drawer {
+  private:
+    GtkWidget *drawer;
+    GtkWidget *drawingArea;
+    GtkAdjustment *hAdjustment, *vAdjustment;
+    int zoomExp;
+    
+    Window *window;
+    
+    // prevent shallow copy
+    Drawer(const Drawer &w);
+    const Drawer& operator=(const Drawer &w);
+    
+    void updateViewport();
+    void updateScrolling();
+    void updateScrollbars(float x = 0.5f, float y = 0.5f);
+    
+    void updateHoveredPoint(float x, float y);
+    
+    gint getWidth() const {
+      return drawingArea->allocation.width;
+    }
+    
+    gint getHeight() const {
+      return drawingArea->allocation.height;
+    }
+    
+    static void realize(GtkWidget *widget, Drawer *drawer);
+    static gboolean eventHandler(GtkWidget *widget, GdkEvent *event, Drawer *drawer);
+    static void valueChanged(GtkAdjustment *adjustment, Drawer *drawer);
+    
+  public:
+    Drawer(Window *window, GdkGLConfig *glconfig);
+    virtual ~Drawer();
+    
+    void zoom(int zoom, float x = 0.5f, float y = 0.5f);
+    
+    GtkWidget *getWidget() {
+      return drawer;
+    }
+    
+    void update() {
+      gtk_widget_queue_draw(drawingArea);
+    }
+};
+
+#endif /*DRAWER_H_*/