TOON: Fix the bottom pixels of text being cut off

It's a dirty rect problem. The computeSize() function needs to
take into consideration that the glyph may be offset, so it's not
enough to just look at its size. For now, I'm assuming that this
is only a problem with characters that stick out below the base
line, so that's all this patch tries to fix. Let's see if that's
enough.

3 files changed, 25 insertions, 2 deletions

diff --git a/engines/toon/anim.cpp b/engines/toon/anim.cpp
index 23bd0f6487..07d51ef1b9 100644
--- a/engines/toon/anim.cpp
+++ b/engines/toon/anim.cpp
@@ -271,6 +271,18 @@ void Animation::applyPalette(int32 offset, int32 srcOffset, int32 numEntries) {
 	_vm->setPaletteEntries(_palette + srcOffset, offset, numEntries);
 }
 
+Common::Rect Animation::getFrameRect(int32 frame) {
+	debugC(4, kDebugAnim, "getFrameRect(%d)", frame);
+	if ((frame < 0) || (frame >= _numFrames)) {
+		return Common::Rect();
+	}
+
+	if (_frames[frame]._ref != -1)
+		frame = _frames[frame]._ref;
+
+	return Common::Rect(_frames[frame]._x1, _frames[frame]._y1, _frames[frame]._x2, _frames[frame]._y2);
+}
+
 int32 Animation::getFrameWidth(int32 frame) {
 	debugC(4, kDebugAnim, "getFrameWidth(%d)", frame);
 	if ((frame < 0) || (frame >= _numFrames))
diff --git a/engines/toon/anim.h b/engines/toon/anim.h
index 13c501b910..4b95b6cf40 100644
--- a/engines/toon/anim.h
+++ b/engines/toon/anim.h
@@ -68,6 +68,7 @@ public:
 	void drawFrameWithMaskAndScale(Graphics::Surface &surface, int32 frame, int32 xx, int32 yy, int32 zz, Picture *mask, int32 scale);
 	void drawStrip(int32 offset = 0);
 	void applyPalette(int32 offset, int32 srcOffset, int32 numEntries);
+	Common::Rect getFrameRect(int32 frame);
 	int32 getFrameWidth(int32 frame);
 	int32 getFrameHeight(int32 frame);
 	int32 getWidth() const;
diff --git a/engines/toon/font.cpp b/engines/toon/font.cpp
index 4c491ae2b3..63304c905f 100644
--- a/engines/toon/font.cpp
+++ b/engines/toon/font.cpp
@@ -21,6 +21,7 @@
 */
 
 #include "common/debug.h"
+#include "common/rect.h"
 
 #include "toon/font.h"
 
@@ -80,7 +81,7 @@ void FontRenderer::renderText(int32 x, int32 y, Common::String origText, int32 m
 		x -= xx / 2;
 	}
 
-	_vm->addDirtyRect(x, y, x + xx + 2, y + yy);
+	_vm->addDirtyRect(x, y, x + xx, y + yy);
 
 	int32 curX = x;
 	int32 curY = y;
@@ -110,6 +111,7 @@ void FontRenderer::computeSize(Common::String origText, int32 *retX, int32 *retY
 	int32 lineHeight = 0;
 	int32 totalHeight = 0;
 	int32 totalWidth = 0;
+	int32 lastLineHeight = 0;
 
 	const byte *text = (const byte *)origText.c_str();
 	while (*text) {
@@ -122,17 +124,25 @@ void FontRenderer::computeSize(Common::String origText, int32 *retX, int32 *retY
 			totalHeight += lineHeight;
 			lineHeight = 0;
 			lineWidth = 0;
+			lastLineHeight = 0;
 		} else {
 			curChar = textToFont(curChar);
 			int32 charWidth = _currentFont->getFrameWidth(curChar) - 1;
 			int32 charHeight = _currentFont->getFrameHeight(curChar);
 			lineWidth += charWidth;
 			lineHeight = MAX(lineHeight, charHeight);
+
+			// The character may be offset, so the height doesn't
+			// really tell how far it will stick out. For now,
+			// assume we only need to take the lower bound into
+			// consideration.
+			Common::Rect charRect = _currentFont->getFrameRect(curChar);
+			lastLineHeight = MAX<int32>(lastLineHeight, charRect.bottom);
 		}
 		text++;
 	}
 
-	totalHeight += lineHeight;
+	totalHeight += lastLineHeight;
 	totalWidth = MAX(totalWidth, lineWidth);
 
 	*retX = totalWidth;