Suppress CGUITTFONT build warnings

diff --git a/src/cguittfont/CGUITTFont.cpp b/src/cguittfont/CGUITTFont.cpp
index f6606996eb74e8b1358876e1bc0623be6248d17a..2342eb7485f21b93d40514fc7b5ad14a13f5a29f 100644 (file)
--- a/src/cguittfont/CGUITTFont.cpp
+++ b/src/cguittfont/CGUITTFont.cpp
@@ -29,6 +29,7 @@
 */
 
 #include <irrlicht.h>
+#include <iostream>
 #include "CGUITTFont.h"
 
 namespace irr
@@ -64,8 +65,24 @@ scene::SMesh CGUITTFont::shared_plane_;
 
 //
 
+/** Checks that no dimension of the FT_BitMap object is negative.  If either is
+ * negative, abort execution.
+ */
+inline void checkFontBitmapSize(const FT_Bitmap &bits)
+{
+       if ((s32)bits.rows < 0 || (s32)bits.width < 0) {
+               std::cout << "Insane font glyph size. File: "
+                         << __FILE__ << " Line " << __LINE__
+                         << std::endl;
+               abort();
+       }
+}
+
 video::IImage* SGUITTGlyph::createGlyphImage(const FT_Bitmap& bits, video::IVideoDriver* driver) const
 {
+       // Make sure our casts to s32 in the loops below will not cause problems
+       checkFontBitmapSize(bits);
+
        // Determine what our texture size should be.
        // Add 1 because textures are inclusive-exclusive.
        core::dimension2du d(bits.width + 1, bits.rows + 1);
@@ -87,10 +104,11 @@ video::IImage* SGUITTGlyph::createGlyphImage(const FT_Bitmap& bits, video::IVide
                        const u32 image_pitch = image->getPitch() / sizeof(u16);
                        u16* image_data = (u16*)image->lock();
                        u8* glyph_data = bits.buffer;
-                       for (int y = 0; y < bits.rows; ++y)
+
+                       for (s32 y = 0; y < (s32)bits.rows; ++y)
                        {
                                u16* row = image_data;
-                               for (int x = 0; x < bits.width; ++x)
+                               for (s32 x = 0; x < (s32)bits.width; ++x)
                                {
                                        // Monochrome bitmaps store 8 pixels per byte.  The left-most pixel is the bit 0x80.
                                        // So, we go through the data each bit at a time.
@@ -116,10 +134,10 @@ video::IImage* SGUITTGlyph::createGlyphImage(const FT_Bitmap& bits, video::IVide
                        const u32 image_pitch = image->getPitch() / sizeof(u32);
                        u32* image_data = (u32*)image->lock();
                        u8* glyph_data = bits.buffer;
-                       for (int y = 0; y < bits.rows; ++y)
+                       for (s32 y = 0; y < (s32)bits.rows; ++y)
                        {
                                u8* row = glyph_data;
-                               for (int x = 0; x < bits.width; ++x)
+                               for (s32 x = 0; x < (s32)bits.width; ++x)
                                {
                                        image_data[y * image_pitch + x] |= static_cast<u32>(255.0f * (static_cast<float>(*row++) / gray_count)) << 24;
                                        //data[y * image_pitch + x] |= ((u32)(*bitsdata++) << 24);