src/view.h

   1 #ifndef _VIEW_H
   2 #define _VIEW_H
   3
   4 #include "ipdf.h"
   5 #include "document.h"
   6 #include "graphicsbuffer.h"
   7 #include "framebuffer.h"
   8 #include "shaderprogram.h"
   9
  10 namespace IPDF
  11 {
  12         class View
  13         {
  14                 public:
  15                         View(Document & document, const Rect & bounds = Rect(0,0,1,1), const Colour & colour = Colour(0.f,0.f,0.f,1.f))
  16                                 : m_use_gpu_transform(false), m_bounds_dirty(true), m_buffer_dirty(true), m_render_inited(false), m_document(document), m_bounds(bounds), m_colour(colour)
  17                         {
  18                                 Debug("View Created - Bounds => {%s}", m_bounds.Str().c_str());
  19                         }
  20                         virtual ~View() {}
  21
  22                         void Render(int width = 0, int height = 0);
  23
  24                         void Translate(Real x, Real y);
  25                         void ScaleAroundPoint(Real x, Real y, Real scaleAmt);
  26
  27                         Rect TransformToViewCoords(const Rect& inp) const;
  28
  29                         const Rect& GetBounds() const { return m_bounds; }
  30
  31                         const bool UsingGPUTransform() const { return m_use_gpu_transform; }
  32                         void ToggleGPUTransform() { m_use_gpu_transform = (!m_use_gpu_transform); m_bounds_dirty = true; m_buffer_dirty = true; }
  33
  34                 private:
  35                         void PrepareRender();
  36                         void UpdateObjBoundsVBO();
  37                         void DrawGrid();
  38                         bool m_use_gpu_transform;
  39                         bool m_bounds_dirty;
  40                         bool m_buffer_dirty;
  41                         bool m_render_inited;
  42                         ShaderProgram m_rect_outline_shader;
  43                         ShaderProgram m_rect_filled_shader;
  44                         ShaderProgram m_circle_filled_shader;
  45                         // Stores the view bounds.
  46                         GraphicsBuffer m_bounds_ubo;
  47                         // Stores the bounds for _all_ objects.
  48                         GraphicsBuffer m_objbounds_vbo;
  49                         // Stores indices into the objbounds vbo for each type of object.
  50                         GraphicsBuffer m_outline_ibo;   // Rectangle outline
  51                         GraphicsBuffer m_filled_ibo;    // Filled rectangle
  52                         GraphicsBuffer m_circle_ibo;    // Filled circle
  53                         FrameBuffer m_cached_display;
  54                         Document & m_document;
  55                         Rect m_bounds;
  56                         Colour m_colour;
  57                         uint32_t m_rendered_filled;
  58                         uint32_t m_rendered_outline;
  59                         uint32_t m_rendered_circle;
  60         };
  61 }
  62
  63 #endif //_VIEW_H