Added functions to draw images at sub-pixel positions

This can be used for smoother mouse cursor movement when rendering our
own mouse cursor (already changed in this commit) and is also necessary
for implementing support for HiDPI font rendering.

Also dropped some almost duplicated OpenGL code.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/graphics.cpp b/src/graphics.cpp
index 19f87e0c..13089b0c 100644
--- a/src/graphics.cpp
+++ b/src/graphics.cpp
@@ -47,6 +47,26 @@ bool Graphics::drawImage(Image *image, int x, int y)
     return drawImage(image, 0, 0, x, y, image->getWidth(), image->getHeight());
 }
 
+bool Graphics::drawImageF(Image *image, float x, float y)
+{
+    if (!image)
+        return false;
+
+    return drawImageF(image, 0, 0, x, y, image->getWidth(), image->getHeight());
+}
+
+bool Graphics::drawRescaledImageF(Image *image, int srcX, int srcY, float dstX, float dstY, int width, int height, float desiredWidth, float desiredHeight, bool useColor)
+{
+    return drawRescaledImage(image,
+                             srcX, srcY,
+                             static_cast<int>(dstX),
+                             static_cast<int>(dstY),
+                             width, height,
+                             static_cast<int>(desiredWidth),
+                             static_cast<int>(desiredHeight),
+                             useColor);
+}
+
 bool Graphics::drawImage(Image *image,
                          int srcX, int srcY,
                          int dstX, int dstY,
@@ -60,6 +80,15 @@ bool Graphics::drawImage(Image *image,
                              width, height, useColor);
 }
 
+bool Graphics::drawImageF(Image *image, int srcX, int srcY, float dstX, float dstY, int width, int height, bool useColor)
+{
+    return drawRescaledImageF(image,
+                              srcX, srcY,
+                              dstX, dstY,
+                              width, height,
+                              width, height, useColor);
+}
+
 void Graphics::drawImagePattern(Image *image, int x, int y, int w, int h)
 {
     if (!image)