Usermode/AxWin3 - Adding decorator to widget renderer

[tpg/acess2.git] / Usermode / Applications / axwin3_src / WM / wm.c

diff --git a/Usermode/Applications/axwin3_src/WM/wm.c b/Usermode/Applications/axwin3_src/WM/wm.c
index b40d1c6..eddd12d 100644 (file)
--- a/Usermode/Applications/axwin3_src/WM/wm.c
+++ b/Usermode/Applications/axwin3_src/WM/wm.c
@@ -201,7 +201,7 @@ void WM_Update(void)
 
 // --- WM Render Routines
 // TODO: Move to another file?
-void WM_Render_FilledRect(tWindow *Window, tColour Colour, int X, int Y, int W, int H)
+void WM_Render_FillRect(tWindow *Window, int X, int Y, int W, int H, tColour Colour)
 {
        uint32_t        *dest;
         int    i;
@@ -232,3 +232,107 @@ void WM_Render_FilledRect(tWindow *Window, tColour Colour, int X, int Y, int W,
        }
 }
 
+void WM_Render_DrawRect(tWindow *Window, int X, int Y, int W, int H, tColour Colour)
+{      
+       WM_Render_FillRect(Window, X, Y, W, 1, Colour);
+       WM_Render_FillRect(Window, X, Y+H-1, W, 1, Colour);
+       WM_Render_FillRect(Window, X, Y, 1, H, Colour);
+       WM_Render_FillRect(Window, X+W-1, Y, 1, H, Colour);
+}
+
+void WM_Render_DrawText(tWindow *Window, int X, int Y, int W, int H, void *Font, tColour Colour, const char *Text)
+{
+       // TODO: Implement
+}
+
+/**
+ * \brief Draw an image to the screen
+ * \todo Maybe have support for an offset in the image
+ */
+void WM_Render_DrawImage(tWindow *Window, int X, int Y, int W, int H, tImage *Image)
+{
+        int    x, y;
+       uint32_t        *dest;
+       uint8_t *data;
+       
+       // Sanity please
+       if( !Image )    return ;
+
+       // Allocate
+       if(!Window->RenderBuffer) {
+               Window->RenderBuffer = malloc(Window->W*Window->H*4);
+       }
+       
+       // Bounds Check
+       if( X >= Window->W )    return ;
+       if( Y >= Window->H )    return ;
+       
+       // Wrap to image size
+       if( W > Image->Width )  W = Image->Width;
+       if( H > Image->Height ) H = Image->Height;
+       
+       // Wrap to screen size
+       if( X + W > Window->W ) W = Window->W - X;
+       if( Y + H > Window->H ) H = Window->H - Y;
+
+       dest = (uint32_t*)Window->RenderBuffer + Y * Window->W + X;
+       data = Image->Data;
+
+       // Do the render
+       switch( Image->Format )
+       {
+       case IMGFMT_BGRA:
+               for( y = 0; y < H; y ++ )
+               {
+                        int    r, g, b, a;     // New
+                        int    or, og, ob;     // Original
+                       for( x = 0; x < W; x ++ )
+                       {
+                               b = data[x*4+0]; g = data[x*4+1]; r = data[x*4+2]; a = data[x*4+3];
+                               if( a == 0 )    continue;       // 100% transparent
+                               ob = dest[x]&0xFF; og = (dest[x] >> 8)&0xFF; or = (dest[x] >> 16)&0xFF;
+                               // Handle Alpha
+                               switch(a)
+                               {
+                               // Transparent: Handled above
+                               // Solid
+                               case 0xFF:      break;
+                               // Half
+                               case 0x80:
+                                       r = (or + r) / 2;
+                                       g = (og + g) / 2;
+                                       b = (ob + b) / 2;
+                                       break;
+                               // General
+                               default:
+                                       r = (or * (255-a) + r * a) / 255;
+                                       g = (og * (255-a) + g * a) / 255;
+                                       b = (ob * (255-a) + b * a) / 255;
+                                       break;
+                               }
+                               dest[x] = b | (g << 8) | (r << 16);
+                       }
+                       data += Image->Width * 4;
+                       dest += Window->W;
+               }
+               break;
+       
+       // RGB
+       case IMGFMT_RGB:
+               for( y = 0; y < H; y ++ )
+               {
+                       for( x = 0; x < W; x ++ )
+                       {
+                               //        Blue           Green                Red
+                               dest[x] = data[x*3+2] | (data[x*3+1] << 8) | (data[x*3+0] << 16);
+                       }
+                       data += W * 3;
+                       dest += Window->W;
+               }
+               break;
+       default:
+               _SysDebug("ERROR: Unknown image format %i\n", Image->Format);
+               break;
+       }
+}
+