Don't re-render the display if nothing has changed

[ipdf/code.git] / src / view.h

diff --git a/src/view.h b/src/view.h
index 172b5e7..d5fe522 100644 (file)
--- a/src/view.h
+++ b/src/view.h
@@ -4,6 +4,7 @@
 #include "ipdf.h"
 #include "document.h"
 #include "graphicsbuffer.h"
+#include "framebuffer.h"
 
 namespace IPDF
 {
@@ -11,13 +12,13 @@ namespace IPDF
        {
                public:
                        View(Document & document, const Rect & bounds = Rect(0,0,1,1), const Colour & colour = Colour(0.f,0.f,0.f,1.f)) 
-                               : m_document(document), m_bounds(bounds), m_colour(colour), m_use_gpu_transform(false), m_bounds_dirty(true)
+                               : m_document(document), m_bounds(bounds), m_colour(colour), m_use_gpu_transform(false), m_bounds_dirty(true), m_buffer_dirty(true)
                        {
                                Debug("View Created - Bounds => {%s}", m_bounds.Str().c_str());
                        }
                        virtual ~View() {}
 
-                       void Render();
+                       void Render(int width = 0, int height = 0);
                        
                        void Translate(Real x, Real y);
                        void ScaleAroundPoint(Real x, Real y, Real scaleAmt);
@@ -27,15 +28,17 @@ namespace IPDF
                        const Rect& GetBounds() const { return m_bounds; }
                        
                        const bool UsingGPUTransform() const { return m_use_gpu_transform; }
-                       void ToggleGPUTransform() { m_use_gpu_transform = (!m_use_gpu_transform); m_bounds_dirty = true; }
+                       void ToggleGPUTransform() { m_use_gpu_transform = (!m_use_gpu_transform); m_bounds_dirty = true; m_buffer_dirty = true; }
                
                private:
                        void ReRender();
                        void DrawGrid();
                        bool m_use_gpu_transform;
                        bool m_bounds_dirty;
+                       bool m_buffer_dirty;
                        GraphicsBuffer m_vertex_buffer;
                        GraphicsBuffer m_index_buffer;
+                       FrameBuffer m_cached_display;
                        Document & m_document;
                        Rect m_bounds;
                        Colour m_colour;