MOHAWK: Add getSubImageSize function.

svn-id: r55334

2 files changed, 12 insertions, 0 deletions

diff --git a/engines/mohawk/graphics.cpp b/engines/mohawk/graphics.cpp
index 9121b5a571..84e9e57946 100644
--- a/engines/mohawk/graphics.cpp
+++ b/engines/mohawk/graphics.cpp
@@ -174,6 +174,16 @@ void GraphicsManager::copyAnimSubImageToScreen(uint16 image, uint16 subimage, in
 	copyAnimImageSectionToScreen(images[subimage], srcRect, dstRect);
 }
 
+void GraphicsManager::getSubImageSize(uint16 image, uint16 subimage, uint16 &width, uint16 &height) {
+	if (!_subImageCache.contains(image))
+		_subImageCache[image] = decodeImages(image);
+	Common::Array<MohawkSurface *> &images = _subImageCache[image];
+
+	Graphics::Surface *surface = images[subimage]->getSurface();
+	width = surface->w;
+	height = surface->h;
+}
+
 void GraphicsManager::copyAnimImageSectionToScreen(MohawkSurface *image, Common::Rect srcRect, Common::Rect dstRect) {
 	uint16 startX = 0;
 	uint16 startY = 0;
diff --git a/engines/mohawk/graphics.h b/engines/mohawk/graphics.h
index 969188457a..22dcb86aff 100644
--- a/engines/mohawk/graphics.h
+++ b/engines/mohawk/graphics.h
@@ -95,6 +95,8 @@ public:
 	void copyAnimImageSectionToScreen(uint16 image, Common::Rect src, Common::Rect dest);
 	void copyAnimSubImageToScreen(uint16 image, uint16 subimage, int left = 0, int top = 0);
 
+	void getSubImageSize(uint16 image, uint16 subimage, uint16 &width, uint16 &height);
+
 protected:
 	void copyAnimImageSectionToScreen(MohawkSurface *image, Common::Rect src, Common::Rect dest);