GUI: Implemented more modes to autoscale

3 files changed, 24 insertions, 6 deletions

diff --git a/graphics/VectorRenderer.h b/graphics/VectorRenderer.h
index 2f609ea6db..fb19fa3156 100644
--- a/graphics/VectorRenderer.h
+++ b/graphics/VectorRenderer.h
@@ -68,6 +68,12 @@ struct DrawStep {
 		kVectorAlignCenter
 	};
 
+	enum AutoScaleMode {
+		kAutoScaleNone = 0,
+		kAutoScaleStretch = 1,
+		kAutoScaleFit = 2
+	};
+
 	VectorAlignment xAlign;
 	VectorAlignment yAlign;
 
@@ -80,7 +86,7 @@ struct DrawStep {
 
 	uint32 scale; /**< scale of all the coordinates in FIXED POINT with 16 bits mantissa */
 
-	bool autoscale; /**< scale alphaimage if present */
+	Graphics::DrawStep::AutoScaleMode autoscale; /**< scale alphaimage if present */
 
 	DrawingFunctionCallback drawingCall; /**< Pointer to drawing function */
 	Graphics::Surface *blitSrc;
@@ -495,7 +501,7 @@ public:
 	virtual void blitKeyBitmap(const Graphics::Surface *source, const Common::Rect &r) = 0;
 	virtual void blitKeyBitmapClip(const Graphics::Surface *source, const Common::Rect &r, const Common::Rect &clipping) = 0;
 
-	virtual void blitAlphaBitmap(Graphics::TransparentSurface *source, const Common::Rect &r, bool autoscale) = 0;
+	virtual void blitAlphaBitmap(Graphics::TransparentSurface *source, const Common::Rect &r, Graphics::DrawStep::AutoScaleMode autoscale = Graphics::DrawStep::kAutoScaleNone) = 0;
 
 	/**
 	 * Draws a string into the screen. Wrapper for the Graphics::Font string drawing
diff --git a/graphics/VectorRendererSpec.cpp b/graphics/VectorRendererSpec.cpp
index 1fdd0fc4eb..68b77d20ee 100644
--- a/graphics/VectorRendererSpec.cpp
+++ b/graphics/VectorRendererSpec.cpp
@@ -886,13 +886,25 @@ blitKeyBitmap(const Graphics::Surface *source, const Common::Rect &r) {
 
 template<typename PixelType>
 void VectorRendererSpec<PixelType>::
-blitAlphaBitmap(Graphics::TransparentSurface *source, const Common::Rect &r, bool autoscale) {
-	if (autoscale)
+blitAlphaBitmap(Graphics::TransparentSurface *source, const Common::Rect &r, Graphics::DrawStep::AutoScaleMode autoscale) {
+	if (autoscale == Graphics::DrawStep::kAutoScaleStretch) {
 		source->blit(*_activeSurface, r.left, r.top, Graphics::FLIP_NONE,
 			nullptr, TS_ARGB(255, 255, 255, 255),
 			  r.width(), r.height());
-	else
+	} else if (autoscale == Graphics::DrawStep::kAutoScaleFit) {
+		double ratio = (double)r.width() / source->w;
+		double ratio2 = (double)r.height() / source->h;
+
+		if (ratio2 < ratio)
+			ratio = ratio2;
+
+		source->blit(*_activeSurface, r.left, r.top, Graphics::FLIP_NONE,
+			nullptr, TS_ARGB(255, 255, 255, 255),
+			  (int)(source->w * ratio), (int)(source->h * ratio));
+
+	} else {
 		source->blit(*_activeSurface, r.left, r.top);
+	}
 }
 
 template<typename PixelType>
diff --git a/graphics/VectorRendererSpec.h b/graphics/VectorRendererSpec.h
index 308fdc5c94..50ee268d4d 100644
--- a/graphics/VectorRendererSpec.h
+++ b/graphics/VectorRendererSpec.h
@@ -95,7 +95,7 @@ public:
 	void blitSubSurfaceClip(const Graphics::Surface *source, const Common::Rect &r, const Common::Rect &clipping);
 	void blitKeyBitmap(const Graphics::Surface *source, const Common::Rect &r);
 	void blitKeyBitmapClip(const Graphics::Surface *source, const Common::Rect &r, const Common::Rect &clipping);
-	void blitAlphaBitmap(Graphics::TransparentSurface *source, const Common::Rect &r, bool autoscale);
+	void blitAlphaBitmap(Graphics::TransparentSurface *source, const Common::Rect &r, Graphics::DrawStep::AutoScaleMode autoscale = Graphics::DrawStep::kAutoScaleNone);
 
 	void applyScreenShading(GUI::ThemeEngine::ShadingStyle shadingStyle);