Remove a few unused variables, functions, and tables.

Found by clang's -Wunused-variable, -Wunused-function, -Wunused-const-variable.

BUG=none
R=bo_xu@foxitsoftware.com

Review URL: https://codereview.chromium.org/404653005

9 files changed, 8 insertions, 82 deletions

diff --git a/core/src/fxge/apple/fx_quartz_device.cpp b/core/src/fxge/apple/fx_quartz_device.cpp
index 7cb94f1093..050d8744bd 100644
--- a/core/src/fxge/apple/fx_quartz_device.cpp
+++ b/core/src/fxge/apple/fx_quartz_device.cpp
@@ -853,7 +853,6 @@ FX_BOOL CFX_QuartzDeviceDriver::CG_DrawGlypRun(int                        nChars
                              a / 255.f);
     SaveState();
     if (pGlyphMatrix) {
-        CGAffineTransform ctm = CGContextGetCTM(_context);
         CGPoint origin = CGPointMake( glyph_positions[0].x,  glyph_positions[0].y);
         origin = CGPointApplyAffineTransform(origin, matrix_cg);
         CGContextTranslateCTM(_context, origin.x, origin.y);
diff --git a/core/src/fxge/dib/fx_dib_composite.cpp b/core/src/fxge/dib/fx_dib_composite.cpp
index da555de9d5..375b7c110e 100644
--- a/core/src/fxge/dib/fx_dib_composite.cpp
+++ b/core/src/fxge/dib/fx_dib_composite.cpp
@@ -2951,7 +2951,6 @@ inline void _CompositeRow_Argb2Rgb_Blend_RgbByteOrder(FX_LPBYTE dest_scan, FX_LP
 }
 inline void _CompositeRow_Rgb2Argb_NoBlend_NoClip_RgbByteOrder(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan, int width, int src_Bpp)
 {
-    int src_gap = src_Bpp - 3;
     for (int col = 0; col < width; col ++) {
         if (src_Bpp == 4) {
             FXARGB_SETRGBORDERDIB(dest_scan, 0xff000000 | FXARGB_GETDIB(src_scan));
diff --git a/core/src/fxge/dib/fx_dib_engine.cpp b/core/src/fxge/dib/fx_dib_engine.cpp
index 803d906ff9..b436f88bd6 100644
--- a/core/src/fxge/dib/fx_dib_engine.cpp
+++ b/core/src/fxge/dib/fx_dib_engine.cpp
@@ -421,7 +421,7 @@ FX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause)
             case 5: {
                     for (int col = m_DestClip.left; col < m_DestClip.right; col ++) {
                         PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col);
-                        int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0;
+                        int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
                         for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
                             int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
                             unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]];
@@ -449,7 +449,7 @@ FX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause)
             case 6: {
                     for (int col = m_DestClip.left; col < m_DestClip.right; col ++) {
                         PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col);
-                        int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0;
+                        int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
                         for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
                             int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
                             pixel_weight = pixel_weight * src_scan_mask[j] / 255;
@@ -466,7 +466,6 @@ FX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause)
                             dest_a += pixel_weight;
                         }
                         if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
-                            dest_k = dest_k < 0 ? 0 : dest_k > 16711680 ? 16711680 : dest_k;
                             dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c;
                             dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m;
                             dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y;
@@ -482,7 +481,7 @@ FX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause)
             case 7: {
                     for (int col = m_DestClip.left; col < m_DestClip.right; col ++) {
                         PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col);
-                        int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0;
+                        int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
                         for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
                             int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
                             FX_LPCBYTE src_pixel = src_scan + j * Bpp;
@@ -505,7 +504,7 @@ FX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause)
             case 8: {
                     for (int col = m_DestClip.left; col < m_DestClip.right; col ++) {
                         PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col);
-                        int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0;
+                        int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
                         for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
                             int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
                             FX_LPCBYTE src_pixel = src_scan + j * Bpp;
@@ -601,7 +600,7 @@ void CStretchEngine::StretchVert()
             case 7: {
                     for (int col = m_DestClip.left; col < m_DestClip.right; col ++) {
                         unsigned char* src_scan = m_pInterBuf + (col - m_DestClip.left) * DestBpp;
-                        int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0;
+                        int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
                         for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
                             int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
                             FX_LPCBYTE src_pixel = src_scan + (j - m_SrcClip.top) * m_InterPitch;
@@ -629,7 +628,7 @@ void CStretchEngine::StretchVert()
                         if (m_DestFormat != FXDIB_Argb) {
                             src_scan_mask = m_pExtraAlphaBuf + (col - m_DestClip.left);
                         }
-                        int dest_a = 0, dest_k = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
+                        int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0;
                         for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) {
                             int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart];
                             FX_LPCBYTE src_pixel = src_scan + (j - m_SrcClip.top) * m_InterPitch;
@@ -835,7 +834,7 @@ FX_BOOL CFX_ImageStretcher::ContinueQuickStretch(IFX_Pause* pPause)
         return FALSE;
     }
     int result_width = m_ClipRect.Width(), result_height = m_ClipRect.Height();
-    int src_width = m_pSource->GetWidth(), src_height = m_pSource->GetHeight();
+    int src_height = m_pSource->GetHeight();
     for (; m_LineIndex < result_height; m_LineIndex ++) {
         int dest_y, src_y;
         if (m_bFlipY) {
@@ -855,7 +854,6 @@ FX_BOOL CFX_ImageStretcher::ContinueQuickStretch(IFX_Pause* pPause)
             return TRUE;
         }
         m_pSource->DownSampleScanline(src_y, m_pScanline, m_DestBPP, m_DestWidth, m_bFlipX, m_ClipRect.left, result_width);
-        FX_LPBYTE scan_extra_alpha = NULL;
         if (m_pMaskScanline) {
             m_pSource->m_pAlphaMask->DownSampleScanline(src_y, m_pMaskScanline, 1, m_DestWidth, m_bFlipX, m_ClipRect.left, result_width);
         }
diff --git a/core/src/fxge/dib/fx_dib_main.cpp b/core/src/fxge/dib/fx_dib_main.cpp
index 3e1e8cf91b..7e8cb0c3db 100644
--- a/core/src/fxge/dib/fx_dib_main.cpp
+++ b/core/src/fxge/dib/fx_dib_main.cpp
@@ -447,7 +447,6 @@ FX_BOOL CFX_DIBitmap::TransferMask(int dest_left, int dest_top, int width, int h
     if (width == 0 || height == 0) {
         return TRUE;
     }
-    int src_pitch = pMask->GetPitch();
     int src_bpp = pMask->GetBPP();
     int alpha;
     FX_DWORD dst_color;
diff --git a/core/src/fxge/dib/fx_dib_transform.cpp b/core/src/fxge/dib/fx_dib_transform.cpp
index 16d791b4ee..65afdd6b3a 100644
--- a/core/src/fxge/dib/fx_dib_transform.cpp
+++ b/core/src/fxge/dib/fx_dib_transform.cpp
@@ -538,7 +538,6 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause)
         int Bpp = m_Storer.GetBitmap()->GetBPP() / 8;
         int destBpp = pTransformed->GetBPP() / 8;
         if (Bpp == 1) {
-            FX_BOOL bHasAlpha = m_Storer.GetBitmap()->HasAlpha();
             FX_DWORD argb[256];
             FX_ARGB* pPal = m_Storer.GetBitmap()->GetPalette();
             if (pPal) {
diff --git a/core/src/fxge/ge/fx_ge_font.cpp b/core/src/fxge/ge/fx_ge_font.cpp
index f3254ea3de..817f3712d9 100644
--- a/core/src/fxge/ge/fx_ge_font.cpp
+++ b/core/src/fxge/ge/fx_ge_font.cpp
@@ -40,7 +40,6 @@ CFX_Font::~CFX_Font()
 #endif
     if (m_Face) {
 #ifdef FOXIT_CHROME_BUILD
-        FXFT_Library library = FXFT_Get_Face_FreeType(m_Face);
         if (FXFT_Get_Face_External_Stream(m_Face)) {
             FXFT_Clear_Face_External_Stream(m_Face);
         }
diff --git a/core/src/fxge/ge/fx_ge_fontmap.cpp b/core/src/fxge/ge/fx_ge_fontmap.cpp
index 1b47f1ff14..f5d378d55b 100644
--- a/core/src/fxge/ge/fx_ge_fontmap.cpp
+++ b/core/src/fxge/ge/fx_ge_fontmap.cpp
@@ -975,8 +975,6 @@ FXFT_Face CFX_FontMapper::FindSubstFont(const CFX_ByteString& name, FX_BOOL bTru
     FX_BOOL bItalic = FALSE;
     FX_DWORD nStyle = 0;
     FX_BOOL bStyleAvail = FALSE;
-    FX_BOOL bFamilyStyleIsWhole = FALSE;
-    FX_BOOL bNextF = FALSE;
     if (iBaseFont < 12) {
         family = g_Base14FontNames[iBaseFont];
         if ((iBaseFont % 4) == 1 || (iBaseFont % 4) == 2) {
@@ -1535,7 +1533,7 @@ FX_DWORD CFX_FolderFontInfo::GetFontData(void* hFont, FX_DWORD table, FX_LPBYTE
     }
     if (datasize && size >= datasize && pFile) {
         FXSYS_fseek(pFile, offset, FXSYS_SEEK_SET);
-        size_t readCnt = FXSYS_fread(buffer, datasize, 1, pFile);
+        FXSYS_fread(buffer, datasize, 1, pFile);
     }
     if (pFile) {
         FXSYS_fclose(pFile);
diff --git a/core/src/fxge/ge/fx_ge_path.cpp b/core/src/fxge/ge/fx_ge_path.cpp
index cd3ff0efbe..b96a2f1163 100644
--- a/core/src/fxge/ge/fx_ge_path.cpp
+++ b/core/src/fxge/ge/fx_ge_path.cpp
@@ -405,7 +405,6 @@ void CFX_PathData::Transform(const CFX_AffineMatrix* pMatrix)
         pMatrix->Transform(m_pPoints[i].m_PointX, m_pPoints[i].m_PointY);
     }
 }
-const int g_Distant[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
 FX_BOOL CFX_PathData::GetZeroAreaPath(CFX_PathData& NewPath, CFX_AffineMatrix* pMatrix, FX_BOOL&bThin, FX_BOOL bAdjust) const
 {
     if (m_PointCount < 3) {
diff --git a/core/src/fxge/ge/fx_ge_text.cpp b/core/src/fxge/ge/fx_ge_text.cpp
index 40acc5fe34..80af2ff197 100644
--- a/core/src/fxge/ge/fx_ge_text.cpp
+++ b/core/src/fxge/ge/fx_ge_text.cpp
@@ -78,28 +78,6 @@ static void _AdjustGlyphSpace(FXTEXT_GLYPHPOS* pGlyphAndPos, int nChars)
         next_origin_f = this_origin_f;
     }
 }
-static const FX_BYTE g_GdipGamma_bgw[9] = {0, 0, 63, 120, 0, 168, 210, 239, 255};
-static const FX_BYTE g_GdipGamma_fgw[9] = {0, 0, 16, 45, 0, 87, 135, 192, 255};
-static const FX_BYTE g_GdipGammaAdjust_47[48] = {
-    0, 30, 33, 34, 35, 36, 37, 38, 38, 39, 39, 40, 40, 40, 41, 41, 41, 42, 42, 42, 42, 43,
-    43, 43, 43, 43, 44, 44, 44, 44, 44, 44, 45, 45, 45, 45, 45, 45, 45, 46,
-    46, 46, 46, 46, 46, 46, 46, 47
-};
-static const FX_BYTE g_GdipGammaAdjust_75[76] = {
-    0, 46, 50, 52, 54, 55, 56, 57, 58, 59, 60, 60, 61, 61, 62, 62, 63, 63, 64, 64, 64, 65,
-    65, 65, 66, 66, 66, 67, 67, 67, 67, 68, 68, 68, 68, 68, 69, 69, 69, 69, 69, 70, 70, 70,
-    70, 70, 71, 71, 71, 71, 71, 71, 72, 72, 72, 72, 72, 72, 72, 73, 73, 73, 73, 73, 73, 73,
-    73, 74, 74, 74, 74, 74, 74, 74, 74, 75
-};
-static const FX_BYTE g_GdipGammaAdjust_81[82] = {
-    0, 49, 53, 56, 58, 59, 60, 61, 62, 63, 64, 65, 65, 66, 66, 67, 67, 68, 68, 69, 69, 69, 70, 70, 70,
-    71, 71, 71, 72, 72, 72, 72, 73, 73, 73, 73, 74, 74, 74, 74, 74, 75, 75, 75, 75, 75, 76, 76, 76, 76,
-    76, 76, 77, 77, 77, 77, 77, 77, 78, 78, 78, 78, 78, 78, 78, 79, 79, 79, 79, 79, 79, 79, 79, 80,
-    80, 80, 80, 80, 80, 80, 80, 81
-};
-static void _Adjust_alpha(int background, int foreground, int& src_alpha, int text_flags, int a)
-{
-}
 static const FX_BYTE g_TextGammaAdjust[256] = {
     0, 2, 3, 4, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, 19,
     21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 38,
@@ -1213,48 +1191,6 @@ CFX_SizeGlyphCache::~CFX_SizeGlyphCache()
 #else
 #define CONTRAST_RAMP_STEP	1
 #endif
-static const FX_BYTE g_adjust_contrast11[256] = {
-    0, 0, 2, 3, 4, 5, 6, 8, 9, 10, 11, 13, 14, 15, 17, 18, 19, 21, 22, 24, 25, 26, 28, 29, 31,
-    32, 33, 35, 36, 38, 39, 40, 42, 43, 45, 46, 48, 49, 51, 52, 54, 55, 56, 58, 59, 61, 62, 64, 65,
-    67, 68, 70, 71, 72, 74, 75, 77, 78, 80, 81, 83, 84, 86, 87, 89, 90, 91, 93, 94, 96, 97, 99, 100,
-    101, 103, 104, 106, 107, 109, 110, 111, 113, 114, 116, 117, 118, 120, 121, 123, 124, 125, 127,
-    128, 130, 131, 132, 134, 135, 136, 138, 139, 140, 142, 143, 144, 146, 147, 148, 149, 151, 152,
-    153, 155, 156, 157, 158, 160, 161, 162, 163, 165, 166, 167, 168, 169, 171, 172, 173, 174, 175,
-    177, 178, 179, 180, 181, 182, 183, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196,
-    197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215,
-    215, 216, 217, 218, 219, 220, 221, 221, 222, 223, 224, 224, 225, 226, 227, 227, 228, 229, 230,
-    230, 231, 232, 232, 233, 234, 234, 235, 236, 236, 237, 237, 238, 239, 239, 240, 240, 241, 241,
-    242, 242, 243, 243, 244, 244, 245, 245, 246, 246, 246, 247, 247, 248, 248, 248, 249, 249, 249,
-    250, 250, 250, 251, 251, 251, 251, 252, 252, 252, 252, 253, 253, 253, 253, 253, 253, 254, 254,
-    254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 255,
-};
-static const FX_BYTE g_adjust_contrast15[256] = {
-    0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
-    22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 40, 41, 42, 43, 45, 46, 47, 48, 50, 51,
-    52, 54, 55, 56, 58, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71, 73, 74, 75, 77, 78, 80, 81, 82, 84, 85, 87,
-    88, 90, 91, 93, 94, 95, 97, 98, 100, 101, 103, 104, 106, 107, 109, 110, 111, 113, 114, 116, 117, 119,
-    120, 122, 123, 125, 126, 128, 129, 130, 132, 133, 135, 136, 138, 139, 141, 142, 143, 145, 146, 148,
-    149, 150, 152, 153, 155, 156, 157, 159, 160, 161, 163, 164, 166, 167, 168, 170, 171, 172, 174, 175,
-    176, 177, 179, 180, 181, 183, 184, 185, 186, 188, 189, 190, 191, 192, 194, 195, 196, 197, 198, 199,
-    201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220,
-    221, 222, 223, 224, 225, 226, 227, 227, 228, 229, 230, 231, 232, 232, 233, 234, 235, 235, 236, 237,
-    237, 238, 239, 239, 240, 241, 241, 242, 242, 243, 244, 244, 245, 245, 246, 246, 247, 247, 248, 248,
-    248, 249, 249, 250, 250, 250, 251, 251, 251, 252, 252, 252, 252, 253, 253, 253, 253, 253, 254, 254,
-    254, 254, 254, 254, 254, 254, 254, 254, 254, 255,
-};
-static void _CalcContrastRamp(FX_LPBYTE ramp, int level)
-{
-    int contrast_min = 0, contrast_max = 255 - level, i;
-    for (i = 0; i < contrast_min; i ++) {
-        ramp[i] = 0;
-    }
-    for (i = contrast_min; i < contrast_max; i ++) {
-        ramp[i] = 255 * (i - contrast_min) / (contrast_max - contrast_min);
-    }
-    for (i = contrast_max; i < 256; i ++) {
-        ramp[i] = 255;
-    }
-}
 void CFX_Font::AdjustMMParams(int glyph_index, int dest_width, int weight)
 {
     FXFT_MM_Var pMasters = NULL;