src/main.h

   1 #include "common.h"
   2
   3 #include "document.h"
   4 #include "view.h"
   5 #include "screen.h"
   6 #include <unistd.h>
   7
   8
   9 using namespace std;
  10 using namespace IPDF;
  11
  12 inline void OverlayBMP(Document & doc, const char * input, const char * output, const Rect & bounds = Rect(0,0,1,1), const Colour & c = Colour(0.f,0.f,0.f,1.f))
  13 {
  14         View view(doc, bounds, c);
  15         Screen scr;
  16         if (input != NULL)
  17                 scr.RenderBMP(input);
  18         view.Render();
  19         if (output != NULL)
  20                 scr.ScreenShot(output);
  21         scr.Present();
  22 }
  23
  24 inline void MainLoop(Document & doc, const Rect & bounds = Rect(0,0,1,1), const Colour & c = Colour(0.f,0.f,0.f,1.f))
  25 {
  26         View view(doc,bounds, c);
  27         Screen scr;
  28         scr.SetMouseHandler([&](int x, int y, int buttons, int wheel) // [?] wtf
  29         {
  30                 static bool oldButtonDown = false;
  31                 static int oldx, oldy;
  32                 if (buttons && !oldButtonDown)
  33                 {
  34                         // We're beginning a drag.
  35                         oldButtonDown = true;
  36                         oldx = x;
  37                         oldy = y;
  38                         scr.SetMouseCursor(Screen::CursorMove);
  39                 }
  40                 if (buttons)
  41                 {
  42                         view.Translate(Real(oldx-x)/Real(scr.ViewportWidth()), Real(oldy-y)/Real(scr.ViewportHeight()));
  43                 }
  44                 else
  45                 {
  46                         oldButtonDown = false;
  47                         scr.SetMouseCursor(Screen::CursorArrow);
  48                 }
  49                 oldx = x;
  50                 oldy = y;
  51
  52                 if (wheel)
  53                 {
  54                         view.ScaleAroundPoint(Real(x)/Real(scr.ViewportWidth()),Real(y)/Real(scr.ViewportHeight()), expf(-wheel/20.f));
  55                 }
  56         }
  57         );
  58
  59         while (scr.PumpEvents())
  60         {
  61                 scr.Clear();
  62                 view.Render();
  63                 scr.Present();
  64         }
  65 }