X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fview.h;h=ec5e97f9a66191cae7f15b7260ebf9c5dec42d80;hp=5865f9a74e8db29ac23003aa16875a0b2e725e34;hb=208cee1f6967db42329a3e665401ef51b3f6d9ff;hpb=700f1449af19115ff2bbe50ad67ea7c73f9aa5cd

diff --git a/src/view.h b/src/view.h
index 5865f9a..ec5e97f 100644
--- a/src/view.h
+++ b/src/view.h
@@ -3,28 +3,85 @@
 
 #include "ipdf.h"
 #include "document.h"
+#include "framebuffer.h"
+#include "objectrenderer.h"
+
+#define USE_GPU_TRANSFORM true
+#define USE_GPU_RENDERING true
 
 namespace IPDF
 {
+	class Screen;
+	/**
+	 * The View class manages a rectangular view into the document.
+	 * It is responsible for coordinate transforms and rendering the document.
+	 * ObjectRenderer's for each type of Object should be created in the constructor.
+	 */
 	class View
 	{
 		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) {}
-			virtual ~View() {}
+			View(Document & document, Screen & screen, const Rect & bounds = Rect(0,0,1,1), const Colour & colour = Colour(0.f,0.f,0.f,1.f));
+			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);
+			void ScaleAroundPoint(Real x, Real y, Real scale_amount);
+			
+			Rect TransformToViewCoords(const Rect& inp) const;
 			
 			const Rect& GetBounds() const { return m_bounds; }
-		
+			
+			const bool UsingGPUTransform() const { return m_use_gpu_transform; } // whether view transform calculated on CPU or GPU
+			const bool UsingGPURendering() const { return m_use_gpu_rendering; } // whether GPU shaders are used or CPU rendering
+			void ToggleGPUTransform() { m_use_gpu_transform = (!m_use_gpu_transform); m_bounds_dirty = true; m_buffer_dirty = true; }
+			void ToggleGPURendering() { m_use_gpu_rendering = (!m_use_gpu_rendering); m_bounds_dirty = true; m_buffer_dirty = true; }
+
+
+			void ForceBoundsDirty() {m_bounds_dirty = true;}		
+			void ForceBufferDirty() {m_buffer_dirty = true;}		
+			void ForceRenderDirty() {m_render_dirty = true;}
+
+
 		private:
-			void DrawGrid();
+			struct GPUObjBounds
+			{
+				float x0, y0;
+				float x1, y1;
+			};
+
+			void PrepareRender(); // call when m_render_dirty is true
+			void UpdateObjBoundsVBO(unsigned first_obj, unsigned last_obj); // call when m_buffer_dirty is true
+
+			void RenderRange(int width, int height, unsigned first_obj, unsigned last_obj);
+
+			bool m_use_gpu_transform;
+			bool m_use_gpu_rendering;
+			bool m_bounds_dirty; // the view bounds has changed (occurs when changing view)
+			bool m_buffer_dirty; // the object bounds have changed (also occurs when changing view, but only when not using GPU transforms)
+			bool m_render_dirty; // the document has changed (occurs when document first loaded)
 			Document & m_document;
+			Screen & m_screen;
+			FrameBuffer m_cached_display;
 			Rect m_bounds;
 			Colour m_colour;
+
+			// Stores the view bounds.
+			GraphicsBuffer m_bounds_ubo; //bounds_dirty means this one has changed
+			// Stores the bounds for _all_ objects.
+			GraphicsBuffer m_objbounds_vbo; //buffer_dirty means this one has changed
+
+			// ObjectRenderers to be initialised in constructor
+			// Trust me it will be easier to generalise things this way. Even though there are pointers.
+			std::vector<ObjectRenderer*> m_object_renderers; 
+			uint8_t * m_cpu_rendering_pixels; // pixels to be used for CPU rendering
+
+#ifndef QUADTREE_DISABLED
+			QuadTreeIndex m_current_quadtree_node;	// The highest node we will traverse.
+			int m_quadtree_max_depth;		// The maximum quadtree depth.
+			void RenderQuadtreeNode(int width, int height, QuadTreeIndex node, int remaining_depth);
+
+#endif
 	};
 }