WebCore: Remove PLATFORM(WIN) files we do not use.

Source/WebCore/platform/graphics/win/UniscribeController.cpp

Index: Source/WebCore/platform/graphics/win/UniscribeController.cpp
diff --git a/Source/WebCore/platform/graphics/win/UniscribeController.cpp b/Source/WebCore/platform/graphics/win/UniscribeController.cpp
deleted file mode 100644
index aacfb169572bfa5a19d5a7f870dbd75c05c91585..0000000000000000000000000000000000000000
--- a/Source/WebCore/platform/graphics/win/UniscribeController.cpp
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
- * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "UniscribeController.h"
-#include "Font.h"
-#include "HWndDC.h"
-#include "SimpleFontData.h"
-#include "TextRun.h"
-#include <wtf/MathExtras.h>
-
-using namespace WTF;
-using namespace Unicode;
-using namespace std;
-
-namespace WebCore {
-
-// FIXME: Rearchitect this to be more like WidthIterator in Font.cpp.  Have an advance() method
-// that does stuff in that method instead of doing everything in the constructor.  Have advance()
-// take the GlyphBuffer as an arg so that we don't have to populate the glyph buffer when
-// measuring.
-UniscribeController::UniscribeController(const Font* font, const TextRun& run, HashSet<const SimpleFontData*>* fallbackFonts)
-    : m_font(*font)
-    , m_run(run)
-    , m_fallbackFonts(fallbackFonts)
-    , m_minGlyphBoundingBoxX(numeric_limits<float>::max())
-    , m_maxGlyphBoundingBoxX(numeric_limits<float>::min())
-    , m_minGlyphBoundingBoxY(numeric_limits<float>::max())
-    , m_maxGlyphBoundingBoxY(numeric_limits<float>::min())
-    , m_end(run.length())
-    , m_currentCharacter(0)
-    , m_runWidthSoFar(0)
-    , m_padding(run.expansion())
-    , m_computingOffsetPosition(false)
-    , m_includePartialGlyphs(false)
-    , m_offsetX(0)
-    , m_offsetPosition(0)
-{
-    if (!m_padding)
-        m_padPerSpace = 0;
-    else {
-        float numSpaces = 0;
-        for (int s = 0; s < m_run.length(); s++) {
-            if (Font::treatAsSpace(m_run[s]))
-                numSpaces++;
-        }
-
-        if (numSpaces == 0)
-            m_padPerSpace = 0;
-        else
-            m_padPerSpace = m_padding / numSpaces;
-    }
-
-    // Null out our uniscribe structs
-    resetControlAndState();
-}
-
-int UniscribeController::offsetForPosition(int x, bool includePartialGlyphs)
-{
-    m_computingOffsetPosition = true;
-    m_includePartialGlyphs = includePartialGlyphs;
-    m_offsetX = x;
-    m_offsetPosition = 0;
-    advance(m_run.length());
-    if (m_computingOffsetPosition) {
-        // The point is to the left or to the right of the entire run.
-        if (m_offsetX >= m_runWidthSoFar && m_run.ltr() || m_offsetX < 0 && m_run.rtl())
-            m_offsetPosition = m_end;
-    }
-    m_computingOffsetPosition = false;
-    return m_offsetPosition;
-}
-
-void UniscribeController::advance(unsigned offset, GlyphBuffer* glyphBuffer)
-{
-    // FIXME: We really want to be using a newer version of Uniscribe that supports the new OpenType
-    // functions.  Those functions would allow us to turn off kerning and ligatures.  Without being able
-    // to do that, we will have buggy line breaking and metrics when simple and complex text are close
-    // together (the complex code path will narrow the text because of kerning and ligatures and then
-    // when bidi processing splits into multiple runs, the simple portions will get wider and cause us to
-    // spill off the edge of a line).
-    if (static_cast<int>(offset) > m_end)
-        offset = m_end;
-
-    int length = offset - m_currentCharacter;
-    if (length <= 0)
-        return;
-
-    // Itemize the string.
-    const UChar* cp = m_run.data16(m_currentCharacter);
-    unsigned baseCharacter = m_currentCharacter;
-
-    // We break up itemization of the string by fontData and (if needed) the use of small caps.
-
-    // FIXME: It's inconsistent that we use logical order when itemizing, since this
-    // does not match normal RTL.
-
-    // FIXME: This function should decode surrogate pairs. Currently it makes little difference that
-    // it does not because the font cache on Windows does not support non-BMP characters.
-    Vector<UChar, 256> smallCapsBuffer;
-    if (m_font.isSmallCaps())
-        smallCapsBuffer.resize(length);
-
-    unsigned indexOfFontTransition = m_run.rtl() ? length - 1 : 0;
-    const UChar* curr = m_run.rtl() ? cp + length  - 1 : cp;
-    const UChar* end = m_run.rtl() ? cp - 1 : cp + length;
-
-    const SimpleFontData* fontData;
-    const SimpleFontData* nextFontData = m_font.glyphDataForCharacter(*curr, false).fontData;
-
-    UChar newC = 0;
-
-    bool isSmallCaps;
-    bool nextIsSmallCaps = m_font.isSmallCaps() && !(category(*curr) & (Mark_NonSpacing | Mark_Enclosing | Mark_SpacingCombining)) && (newC = toUpper(*curr)) != *curr;
-
-    if (nextIsSmallCaps)
-        smallCapsBuffer[curr - cp] = newC;
-
-    while (true) {
-        curr = m_run.rtl() ? curr - 1 : curr + 1;
-        if (curr == end)
-            break;
-
-        fontData = nextFontData;
-        isSmallCaps = nextIsSmallCaps;
-        int index = curr - cp;
-        UChar c = *curr;
-
-        bool forceSmallCaps = isSmallCaps && (category(c) & (Mark_NonSpacing | Mark_Enclosing | Mark_SpacingCombining));
-        nextFontData = m_font.glyphDataForCharacter(*curr, false, forceSmallCaps ? SmallCapsVariant : AutoVariant).fontData;
-        if (m_font.isSmallCaps()) {
-            nextIsSmallCaps = forceSmallCaps || (newC = toUpper(c)) != c;
-            if (nextIsSmallCaps)
-                smallCapsBuffer[index] = forceSmallCaps ? c : newC;
-        }
-
-        if (m_fallbackFonts && nextFontData != fontData && fontData != m_font.primaryFont())
-            m_fallbackFonts->add(fontData);
-
-        if (nextFontData != fontData || nextIsSmallCaps != isSmallCaps) {
-            int itemStart = m_run.rtl() ? index + 1 : indexOfFontTransition;
-            int itemLength = m_run.rtl() ? indexOfFontTransition - index : index - indexOfFontTransition;
-            m_currentCharacter = baseCharacter + itemStart;
-            itemizeShapeAndPlace((isSmallCaps ? smallCapsBuffer.data() : cp) + itemStart, itemLength, fontData, glyphBuffer);
-            indexOfFontTransition = index;
-        }
-    }
-    
-    int itemLength = m_run.rtl() ? indexOfFontTransition + 1 : length - indexOfFontTransition;
-    if (itemLength) {
-        if (m_fallbackFonts && nextFontData != m_font.primaryFont())
-            m_fallbackFonts->add(nextFontData);
-
-        int itemStart = m_run.rtl() ? 0 : indexOfFontTransition;
-        m_currentCharacter = baseCharacter + itemStart;
-        itemizeShapeAndPlace((nextIsSmallCaps ? smallCapsBuffer.data() : cp) + itemStart, itemLength, nextFontData, glyphBuffer);
-    }
-
-    m_currentCharacter = baseCharacter + length;
-}
-
-void UniscribeController::itemizeShapeAndPlace(const UChar* cp, unsigned length, const SimpleFontData* fontData, GlyphBuffer* glyphBuffer)
-{
-    // ScriptItemize (in Windows XP versions prior to SP2) can overflow by 1.  This is why there is an extra empty item
-    // hanging out at the end of the array
-    m_items.resize(6);
-    int numItems = 0;
-    while (ScriptItemize(cp, length, m_items.size() - 1, &m_control, &m_state, m_items.data(), &numItems) == E_OUTOFMEMORY) {
-        m_items.resize(m_items.size() * 2);
-        resetControlAndState();
-    }
-    m_items.resize(numItems + 1);
-
-    if (m_run.rtl()) {
-        for (int i = m_items.size() - 2; i >= 0; i--) {
-            if (!shapeAndPlaceItem(cp, i, fontData, glyphBuffer))
-                return;
-        }
-    } else {
-        for (unsigned i = 0; i < m_items.size() - 1; i++) {
-            if (!shapeAndPlaceItem(cp, i, fontData, glyphBuffer))
-                return;
-        }
-    }
-}
-
-void UniscribeController::resetControlAndState()
-{
-    memset(&m_control, 0, sizeof(SCRIPT_CONTROL));
-    memset(&m_state, 0, sizeof(SCRIPT_STATE));
-
-    // Set up the correct direction for the run.
-    m_state.uBidiLevel = m_run.rtl();
-    
-    // Lock the correct directional override.
-    m_state.fOverrideDirection = m_run.directionalOverride();
-}
-
-bool UniscribeController::shapeAndPlaceItem(const UChar* cp, unsigned i, const SimpleFontData* fontData, GlyphBuffer* glyphBuffer)
-{
-    // Determine the string for this item.
-    const UChar* str = cp + m_items[i].iCharPos;
-    int len = m_items[i+1].iCharPos - m_items[i].iCharPos;
-    SCRIPT_ITEM item = m_items[i];
-
-    // Set up buffers to hold the results of shaping the item.
-    Vector<WORD> glyphs;
-    Vector<WORD> clusters;
-    Vector<SCRIPT_VISATTR> visualAttributes;
-    clusters.resize(len);
-     
-    // Shape the item.
-    // The recommended size for the glyph buffer is 1.5 * the character length + 16 in the uniscribe docs.
-    // Apparently this is a good size to avoid having to make repeated calls to ScriptShape.
-    glyphs.resize(1.5 * len + 16);
-    visualAttributes.resize(glyphs.size());
-
-    if (!shape(str, len, item, fontData, glyphs, clusters, visualAttributes))
-        return true;
-
-    // We now have a collection of glyphs.
-    Vector<GOFFSET> offsets;
-    Vector<int> advances;
-    offsets.resize(glyphs.size());
-    advances.resize(glyphs.size());
-    int glyphCount = 0;
-    HRESULT placeResult = ScriptPlace(0, fontData->scriptCache(), glyphs.data(), glyphs.size(), visualAttributes.data(),
-                                      &item.a, advances.data(), offsets.data(), 0);
-    if (placeResult == E_PENDING) {
-        // The script cache isn't primed with enough info yet.  We need to select our HFONT into
-        // a DC and pass the DC in to ScriptPlace.
-        HWndDC hdc(0);
-        HFONT hfont = fontData->platformData().hfont();
-        HFONT oldFont = (HFONT)SelectObject(hdc, hfont);
-        placeResult = ScriptPlace(hdc, fontData->scriptCache(), glyphs.data(), glyphs.size(), visualAttributes.data(),
-                                  &item.a, advances.data(), offsets.data(), 0);
-        SelectObject(hdc, oldFont);
-    }
-    
-    if (FAILED(placeResult) || glyphs.isEmpty())
-        return true;
-
-    // Convert all chars that should be treated as spaces to use the space glyph.
-    // We also create a map that allows us to quickly go from space glyphs back to their corresponding characters.
-    Vector<int> spaceCharacters(glyphs.size());
-    spaceCharacters.fill(-1);
-
-    const float cLogicalScale = fontData->platformData().useGDI() ? 1.0f : 32.0f;
-    float spaceWidth = fontData->spaceWidth() - fontData->syntheticBoldOffset();
-    unsigned logicalSpaceWidth = spaceWidth * cLogicalScale;
-
-    for (int k = 0; k < len; k++) {
-        UChar ch = *(str + k);
-        bool treatAsSpace = Font::treatAsSpace(ch);
-        bool treatAsZeroWidthSpace = Font::treatAsZeroWidthSpace(ch);
-        if (treatAsSpace || treatAsZeroWidthSpace) {
-            // Substitute in the space glyph at the appropriate place in the glyphs
-            // array.
-            glyphs[clusters[k]] = fontData->spaceGlyph();
-            advances[clusters[k]] = treatAsSpace ? logicalSpaceWidth : 0;
-            if (treatAsSpace)
-                spaceCharacters[clusters[k]] = m_currentCharacter + k + item.iCharPos;
-        }
-    }
-
-    // Populate our glyph buffer with this information.
-    bool hasExtraSpacing = m_font.letterSpacing() || m_font.wordSpacing() || m_padding;
-    
-    float leftEdge = m_runWidthSoFar;
-
-    for (unsigned k = 0; k < glyphs.size(); k++) {
-        Glyph glyph = glyphs[k];
-        float advance = advances[k] / cLogicalScale;
-        float offsetX = offsets[k].du / cLogicalScale;
-        float offsetY = offsets[k].dv / cLogicalScale;
-
-        // Match AppKit's rules for the integer vs. non-integer rendering modes.
-        float roundedAdvance = roundf(advance);
-        if (!m_font.isPrinterFont() && !fontData->isSystemFont()) {
-            advance = roundedAdvance;
-            offsetX = roundf(offsetX);
-            offsetY = roundf(offsetY);
-        }
-
-        advance += fontData->syntheticBoldOffset();
-
-        if (hasExtraSpacing) {
-            // If we're a glyph with an advance, go ahead and add in letter-spacing.
-            // That way we weed out zero width lurkers.  This behavior matches the fast text code path.
-            if (advance && m_font.letterSpacing())
-                advance += m_font.letterSpacing();
-
-            // Handle justification and word-spacing.
-            int characterIndex = spaceCharacters[k];
-            // characterIndex is left at the initial value of -1 for glyphs that do not map back to treated-as-space characters.
-            if (characterIndex != -1) {
-                // Account for padding. WebCore uses space padding to justify text.
-                // We distribute the specified padding over the available spaces in the run.
-                if (m_padding) {
-                    // Use leftover padding if not evenly divisible by number of spaces.
-                    if (m_padding < m_padPerSpace) {
-                        advance += m_padding;
-                        m_padding = 0;
-                    } else {
-                        m_padding -= m_padPerSpace;
-                        advance += m_padPerSpace;
-                    }
-                }
-
-                // Account for word-spacing.
-                if (characterIndex > 0 && !Font::treatAsSpace(*m_run.data16(characterIndex - 1)) && m_font.wordSpacing())
-                    advance += m_font.wordSpacing();
-            }
-        }
-
-        m_runWidthSoFar += advance;
-
-        // FIXME: We need to take the GOFFSETS for combining glyphs and store them in the glyph buffer
-        // as well, so that when the time comes to draw those glyphs, we can apply the appropriate
-        // translation.
-        if (glyphBuffer) {
-            FloatSize size(offsetX, -offsetY);
-            glyphBuffer->add(glyph, fontData, advance, &size);
-        }
-
-        FloatRect glyphBounds = fontData->boundsForGlyph(glyph);
-        glyphBounds.move(m_glyphOrigin.x(), m_glyphOrigin.y());
-        m_minGlyphBoundingBoxX = min(m_minGlyphBoundingBoxX, glyphBounds.x());
-        m_maxGlyphBoundingBoxX = max(m_maxGlyphBoundingBoxX, glyphBounds.maxX());
-        m_minGlyphBoundingBoxY = min(m_minGlyphBoundingBoxY, glyphBounds.y());
-        m_maxGlyphBoundingBoxY = max(m_maxGlyphBoundingBoxY, glyphBounds.maxY());
-        m_glyphOrigin.move(advance + offsetX, -offsetY);
-
-        // Mutate the glyph array to contain our altered advances.
-        if (m_computingOffsetPosition)
-            advances[k] = advance;
-    }
-
-    while (m_computingOffsetPosition && m_offsetX >= leftEdge && m_offsetX < m_runWidthSoFar) {
-        // The position is somewhere inside this run.
-        int trailing = 0;
-        ScriptXtoCP(m_offsetX - leftEdge, clusters.size(), glyphs.size(), clusters.data(), visualAttributes.data(),
-                    advances.data(), &item.a, &m_offsetPosition, &trailing);
-        if (trailing && m_includePartialGlyphs && m_offsetPosition < len - 1) {
-            m_offsetPosition += m_currentCharacter + m_items[i].iCharPos;
-            m_offsetX += m_run.rtl() ? -trailing : trailing;
-        } else {
-            m_computingOffsetPosition = false;
-            m_offsetPosition += m_currentCharacter + m_items[i].iCharPos;
-            if (trailing && m_includePartialGlyphs)
-               m_offsetPosition++;
-            return false;
-        }
-    }
-
-    return true;
-}
-
-bool UniscribeController::shape(const UChar* str, int len, SCRIPT_ITEM item, const SimpleFontData* fontData,
-                                Vector<WORD>& glyphs, Vector<WORD>& clusters,
-                                Vector<SCRIPT_VISATTR>& visualAttributes)
-{
-    HWndDC hdc;
-    HFONT oldFont = 0;
-    HRESULT shapeResult = E_PENDING;
-    int glyphCount = 0;
-    do {
-        shapeResult = ScriptShape(hdc, fontData->scriptCache(), str, len, glyphs.size(), &item.a,
-                                  glyphs.data(), clusters.data(), visualAttributes.data(), &glyphCount);
-        if (shapeResult == E_PENDING) {
-            // The script cache isn't primed with enough info yet.  We need to select our HFONT into
-            // a DC and pass the DC in to ScriptShape.
-            ASSERT(!hdc);
-            hdc.setHWnd(0);
-            HFONT hfont = fontData->platformData().hfont();
-            oldFont = (HFONT)SelectObject(hdc, hfont);
-        } else if (shapeResult == E_OUTOFMEMORY) {
-            // Need to resize our buffers.
-            glyphs.resize(glyphs.size() * 2);
-            visualAttributes.resize(glyphs.size());
-        }
-    } while (shapeResult == E_PENDING || shapeResult == E_OUTOFMEMORY);
-
-    if (hdc)
-        SelectObject(hdc, oldFont);
-
-    if (FAILED(shapeResult))
-        return false;
-
-    glyphs.shrink(glyphCount);
-    visualAttributes.shrink(glyphCount);
-
-    return true;
-}
-
-}