Merge pull request #239 from ebraminio/dwfix
Improve DirectWrite backend
This commit is contained in:
Behdad Esfahbod
commit
ef476be80d
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@ -1,5 +1,5 @@
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/*
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* Copyright © 2015 Ebrahim Byagowi
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* Copyright © 2015-2016 Ebrahim Byagowi
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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@ -25,7 +25,11 @@
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#define HB_SHAPER directwrite
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#include "hb-shaper-impl-private.hh"
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#include <dwrite.h>
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#ifndef HB_DIRECTWRITE_EXPERIMENTAL_JUSTIFICATION
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#include <DWrite.h>
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#else
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#include <DWrite_1.h>
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#endif
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#include "hb-directwrite.h"
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@ -176,7 +180,8 @@ _hb_rename_font(hb_blob_t *blob, wchar_t *new_name)
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hb_directwrite_shaper_face_data_t *
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_hb_directwrite_shaper_face_data_create(hb_face_t *face)
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{
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hb_directwrite_shaper_face_data_t *data = (hb_directwrite_shaper_face_data_t *)calloc(1, sizeof (hb_directwrite_shaper_face_data_t));
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hb_directwrite_shaper_face_data_t *data =
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(hb_directwrite_shaper_face_data_t *) calloc (1, sizeof (hb_directwrite_shaper_face_data_t));
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if (unlikely (!data))
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return NULL;
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@ -244,26 +249,30 @@ _hb_directwrite_shaper_font_data_create (hb_font_t *font)
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{
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if (unlikely (!hb_directwrite_shaper_face_data_ensure (font->face))) return NULL;
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hb_directwrite_shaper_font_data_t *data = (hb_directwrite_shaper_font_data_t *) calloc (1, sizeof (hb_directwrite_shaper_font_data_t));
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hb_directwrite_shaper_font_data_t *data =
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(hb_directwrite_shaper_font_data_t *) calloc (1, sizeof (hb_directwrite_shaper_font_data_t));
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if (unlikely (!data))
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return NULL;
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data->hdc = GetDC (NULL);
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if (unlikely (!populate_log_font (&data->log_font, font))) {
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if (unlikely (!populate_log_font (&data->log_font, font)))
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{
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DEBUG_MSG (DIRECTWRITE, font, "Font populate_log_font() failed");
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_hb_directwrite_shaper_font_data_destroy (data);
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return NULL;
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}
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data->hfont = CreateFontIndirectW (&data->log_font);
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if (unlikely (!data->hfont)) {
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if (unlikely (!data->hfont))
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{
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DEBUG_MSG (DIRECTWRITE, font, "Font CreateFontIndirectW() failed");
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_hb_directwrite_shaper_font_data_destroy (data);
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return NULL;
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}
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if (!SelectObject (data->hdc, data->hfont)) {
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if (!SelectObject (data->hdc, data->hfont))
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{
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DEBUG_MSG (DIRECTWRITE, font, "Font SelectObject() failed");
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_hb_directwrite_shaper_font_data_destroy (data);
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return NULL;
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@ -333,16 +342,16 @@ public:
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// results.
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struct Run
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{
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UINT32 mTextStart; // starting text position of this run
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UINT32 mTextLength; // number of contiguous code units covered
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UINT32 mGlyphStart; // starting glyph in the glyphs array
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UINT32 mGlyphCount; // number of glyphs associated with this run of
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uint32_t mTextStart; // starting text position of this run
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uint32_t mTextLength; // number of contiguous code units covered
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uint32_t mGlyphStart; // starting glyph in the glyphs array
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uint32_t mGlyphCount; // number of glyphs associated with this run of
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// text
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DWRITE_SCRIPT_ANALYSIS mScript;
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UINT8 mBidiLevel;
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uint8_t mBidiLevel;
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bool mIsSideways;
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inline bool ContainsTextPosition(UINT32 aTextPosition) const
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inline bool ContainsTextPosition(uint32_t aTextPosition) const
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{
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return aTextPosition >= mTextStart
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&& aTextPosition < mTextStart + mTextLength;
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@ -353,7 +362,7 @@ public:
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public:
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TextAnalysis(const wchar_t* text,
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UINT32 textLength,
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uint32_t textLength,
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const wchar_t* localeName,
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DWRITE_READING_DIRECTION readingDirection)
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: mText(text)
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@ -367,7 +376,7 @@ public:
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for (Run *run = mRunHead.nextRun; run;) {
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Run *origRun = run;
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run = run->nextRun;
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delete origRun;
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free (origRun);
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}
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}
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@ -388,10 +397,7 @@ public:
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mCurrentRun = &mRunHead;
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// Call each of the analyzers in sequence, recording their results.
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if (SUCCEEDED(hr = textAnalyzer->AnalyzeScript(this,
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0,
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mTextLength,
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this))) {
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if (SUCCEEDED (hr = textAnalyzer->AnalyzeScript (this, 0, mTextLength, this))) {
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*runHead = &mRunHead;
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}
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@ -400,9 +406,9 @@ public:
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// IDWriteTextAnalysisSource implementation
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IFACEMETHODIMP GetTextAtPosition(UINT32 textPosition,
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OUT WCHAR const** textString,
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OUT UINT32* textLength)
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IFACEMETHODIMP GetTextAtPosition(uint32_t textPosition,
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OUT wchar_t const** textString,
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OUT uint32_t* textLength)
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{
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if (textPosition >= mTextLength) {
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// No text at this position, valid query though.
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@ -416,9 +422,9 @@ public:
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return S_OK;
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}
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IFACEMETHODIMP GetTextBeforePosition(UINT32 textPosition,
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OUT WCHAR const** textString,
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OUT UINT32* textLength)
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IFACEMETHODIMP GetTextBeforePosition(uint32_t textPosition,
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OUT wchar_t const** textString,
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OUT uint32_t* textLength)
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{
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if (textPosition == 0 || textPosition > mTextLength) {
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// Either there is no text before here (== 0), or this
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@ -436,15 +442,15 @@ public:
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IFACEMETHODIMP_(DWRITE_READING_DIRECTION)
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GetParagraphReadingDirection() { return mReadingDirection; }
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IFACEMETHODIMP GetLocaleName(UINT32 textPosition,
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UINT32* textLength,
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WCHAR const** localeName) {
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IFACEMETHODIMP GetLocaleName(uint32_t textPosition,
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uint32_t* textLength,
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wchar_t const** localeName) {
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return S_OK;
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}
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IFACEMETHODIMP
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GetNumberSubstitution(UINT32 textPosition,
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OUT UINT32* textLength,
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GetNumberSubstitution(uint32_t textPosition,
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OUT uint32_t* textLength,
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OUT IDWriteNumberSubstitution** numberSubstitution)
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{
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// We do not support number substitution.
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@ -457,8 +463,8 @@ public:
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// IDWriteTextAnalysisSink implementation
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IFACEMETHODIMP
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SetScriptAnalysis(UINT32 textPosition,
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UINT32 textLength,
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SetScriptAnalysis(uint32_t textPosition,
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uint32_t textLength,
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DWRITE_SCRIPT_ANALYSIS const* scriptAnalysis)
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{
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SetCurrentRun(textPosition);
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@ -472,22 +478,22 @@ public:
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}
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IFACEMETHODIMP
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SetLineBreakpoints(UINT32 textPosition,
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UINT32 textLength,
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SetLineBreakpoints(uint32_t textPosition,
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uint32_t textLength,
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const DWRITE_LINE_BREAKPOINT* lineBreakpoints) { return S_OK; }
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IFACEMETHODIMP SetBidiLevel(UINT32 textPosition,
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UINT32 textLength,
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UINT8 explicitLevel,
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UINT8 resolvedLevel) { return S_OK; }
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IFACEMETHODIMP SetBidiLevel(uint32_t textPosition,
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uint32_t textLength,
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uint8_t explicitLevel,
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uint8_t resolvedLevel) { return S_OK; }
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IFACEMETHODIMP
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SetNumberSubstitution(UINT32 textPosition,
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UINT32 textLength,
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SetNumberSubstitution(uint32_t textPosition,
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uint32_t textLength,
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IDWriteNumberSubstitution* numberSubstitution) { return S_OK; }
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protected:
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Run *FetchNextRun(IN OUT UINT32* textLength)
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Run *FetchNextRun(IN OUT uint32_t* textLength)
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{
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// Used by the sink setters, this returns a reference to the next run.
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// Position and length are adjusted to now point after the current run
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@ -509,7 +515,7 @@ protected:
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return origRun;
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}
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void SetCurrentRun(UINT32 textPosition)
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void SetCurrentRun(uint32_t textPosition)
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{
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// Move the current run to the given position.
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// Since the analyzers generally return results in a forward manner,
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@ -530,7 +536,7 @@ protected:
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// of our runs");
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}
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void SplitCurrentRun(UINT32 splitPosition)
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void SplitCurrentRun(uint32_t splitPosition)
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{
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if (!mCurrentRun) {
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//NS_ASSERTION(false, "SplitCurrentRun called without current run.");
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@ -543,7 +549,7 @@ protected:
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// or before it. Usually the first.
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return;
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}
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Run *newRun = new Run;
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Run *newRun = (Run*) malloc (sizeof (Run));
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*newRun = *mCurrentRun;
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@ -552,7 +558,7 @@ protected:
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mCurrentRun->nextRun = newRun;
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// Adjust runs' text positions and lengths.
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UINT32 splitPoint = splitPosition - mCurrentRun->mTextStart;
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uint32_t splitPoint = splitPosition - mCurrentRun->mTextStart;
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newRun->mTextStart += splitPoint;
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newRun->mTextLength -= splitPoint;
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mCurrentRun->mTextLength = splitPoint;
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@ -563,9 +569,9 @@ protected:
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// Input
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// (weak references are fine here, since this class is a transient
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// stack-based helper that doesn't need to copy data)
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UINT32 mTextLength;
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const WCHAR* mText;
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const WCHAR* mLocaleName;
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uint32_t mTextLength;
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const wchar_t* mText;
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const wchar_t* mLocaleName;
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DWRITE_READING_DIRECTION mReadingDirection;
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// Current processing state.
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@ -575,6 +581,10 @@ protected:
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Run mRunHead;
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};
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static inline uint16_t hb_uint16_swap (const uint16_t v)
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{ return (v >> 8) | (v << 8); }
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static inline uint32_t hb_uint32_swap (const uint32_t v)
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{ return (hb_uint16_swap(v) << 16) | hb_uint16_swap(v >> 16); }
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/*
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* shaper
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@ -592,11 +602,15 @@ _hb_directwrite_shape(hb_shape_plan_t *shape_plan,
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hb_directwrite_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
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// factory probably should be cached
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#ifndef HB_DIRECTWRITE_EXPERIMENTAL_JUSTIFICATION
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IDWriteFactory* dwriteFactory;
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DWriteCreateFactory(
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#else
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IDWriteFactory1* dwriteFactory;
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#endif
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DWriteCreateFactory (
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DWRITE_FACTORY_TYPE_SHARED,
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__uuidof(IDWriteFactory),
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reinterpret_cast<IUnknown**>(&dwriteFactory)
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__uuidof (IDWriteFactory),
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(IUnknown**) &dwriteFactory
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);
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IDWriteGdiInterop *gdiInterop;
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@ -604,8 +618,14 @@ _hb_directwrite_shape(hb_shape_plan_t *shape_plan,
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IDWriteFontFace* fontFace;
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gdiInterop->CreateFontFaceFromHdc (font_data->hdc, &fontFace);
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#ifndef HB_DIRECTWRITE_EXPERIMENTAL_JUSTIFICATION
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IDWriteTextAnalyzer* analyzer;
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dwriteFactory->CreateTextAnalyzer (&analyzer);
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dwriteFactory->CreateTextAnalyzer(&analyzer);
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#else
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IDWriteTextAnalyzer* analyzer0;
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dwriteFactory->CreateTextAnalyzer (&analyzer0);
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IDWriteTextAnalyzer1* analyzer = (IDWriteTextAnalyzer1*) analyzer0;
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#endif
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unsigned int scratch_size;
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hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size);
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@ -620,7 +640,7 @@ _hb_directwrite_shape(hb_shape_plan_t *shape_plan,
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#define utf16_index() var1.u32
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ALLOCATE_ARRAY(WCHAR, pchars, buffer->len * 2);
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ALLOCATE_ARRAY(wchar_t, textString, buffer->len * 2);
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unsigned int chars_len = 0;
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for (unsigned int i = 0; i < buffer->len; i++)
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@ -628,17 +648,17 @@ _hb_directwrite_shape(hb_shape_plan_t *shape_plan,
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hb_codepoint_t c = buffer->info[i].codepoint;
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buffer->info[i].utf16_index() = chars_len;
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if (likely(c <= 0xFFFFu))
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pchars[chars_len++] = c;
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textString[chars_len++] = c;
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else if (unlikely(c > 0x10FFFFu))
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pchars[chars_len++] = 0xFFFDu;
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textString[chars_len++] = 0xFFFDu;
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else {
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pchars[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10);
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pchars[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1 << 10) - 1));
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textString[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10);
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textString[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1 << 10) - 1));
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}
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}
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ALLOCATE_ARRAY(WORD, log_clusters, chars_len);
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if (num_features)
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// if (num_features)
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{
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/* Need log_clusters to assign features. */
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chars_len = 0;
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@ -664,164 +684,287 @@ _hb_directwrite_shape(hb_shape_plan_t *shape_plan,
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* but we never attempt to shape a word longer than 64K characters
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* in a single gfxShapedWord, so we cannot exceed that limit.
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*/
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UINT32 length = buffer->len;
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uint32_t textLength = buffer->len;
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TextAnalysis analysis(pchars, length, NULL, readingDirection);
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TextAnalysis analysis(textString, textLength, NULL, readingDirection);
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TextAnalysis::Run *runHead;
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hr = analysis.GenerateResults(analyzer, &runHead);
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if (FAILED(hr)) {
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//NS_WARNING("Analyzer failed to generate results.");
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#define FAIL(...) \
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HB_STMT_START { \
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DEBUG_MSG (DIRECTWRITE, NULL, __VA_ARGS__); \
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return false; \
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} HB_STMT_END;
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if (FAILED (hr))
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{
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FAIL ("Analyzer failed to generate results.");
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return false;
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}
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UINT32 maxGlyphs = 3 * length / 2 + 16;
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uint32_t maxGlyphCount = 3 * textLength / 2 + 16;
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uint32_t glyphCount;
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bool isRightToLeft = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
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#define INITIAL_GLYPH_SIZE 400
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UINT16* clusters = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
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UINT16* glyphs = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
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const wchar_t localeName[20] = {0};
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if (buffer->props.language != NULL)
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{
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mbstowcs ((wchar_t*) localeName,
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hb_language_to_string (buffer->props.language), 20);
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}
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DWRITE_TYPOGRAPHIC_FEATURES singleFeatures;
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singleFeatures.featureCount = num_features;
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if (num_features)
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{
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DWRITE_FONT_FEATURE* dwfeatureArray = (DWRITE_FONT_FEATURE*)
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malloc (sizeof (DWRITE_FONT_FEATURE) * num_features);
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for (unsigned int i = 0; i < num_features; ++i)
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{
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dwfeatureArray[i].nameTag = (DWRITE_FONT_FEATURE_TAG)
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hb_uint32_swap (features[i].tag);
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dwfeatureArray[i].parameter = features[i].value;
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}
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singleFeatures.features = dwfeatureArray;
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}
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const DWRITE_TYPOGRAPHIC_FEATURES* dwFeatures =
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(const DWRITE_TYPOGRAPHIC_FEATURES*) &singleFeatures;
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const uint32_t featureRangeLengths[] = { textLength };
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retry_getglyphs:
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uint16_t* clusterMap = (uint16_t*) malloc (maxGlyphCount * sizeof (uint16_t));
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uint16_t* glyphIndices = (uint16_t*) malloc (maxGlyphCount * sizeof (uint16_t));
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DWRITE_SHAPING_TEXT_PROPERTIES* textProperties = (DWRITE_SHAPING_TEXT_PROPERTIES*)
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malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_TEXT_PROPERTIES));
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malloc (maxGlyphCount * sizeof (DWRITE_SHAPING_TEXT_PROPERTIES));
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DWRITE_SHAPING_GLYPH_PROPERTIES* glyphProperties = (DWRITE_SHAPING_GLYPH_PROPERTIES*)
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malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_GLYPH_PROPERTIES));
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malloc (maxGlyphCount * sizeof (DWRITE_SHAPING_GLYPH_PROPERTIES));
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UINT32 actualGlyphs;
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hr = analyzer->GetGlyphs (textString, textLength, fontFace, FALSE,
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isRightToLeft, &runHead->mScript, localeName, NULL, &dwFeatures,
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featureRangeLengths, 1, maxGlyphCount, clusterMap, textProperties, glyphIndices,
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glyphProperties, &glyphCount);
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bool backward = HB_DIRECTION_IS_BACKWARD(buffer->props.direction);
|
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if (unlikely (hr == HRESULT_FROM_WIN32 (ERROR_INSUFFICIENT_BUFFER)))
|
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{
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free (clusterMap);
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free (glyphIndices);
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free (textProperties);
|
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free (glyphProperties);
|
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|
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wchar_t lang[4];
|
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mbstowcs(lang, hb_language_to_string(buffer->props.language), 4);
|
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hr = analyzer->GetGlyphs(pchars, length,
|
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fontFace, FALSE,
|
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buffer->props.direction,
|
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&runHead->mScript, (const wchar_t*)lang, NULL, NULL, NULL, 0,
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maxGlyphs, clusters, textProperties,
|
||||
glyphs, glyphProperties, &actualGlyphs);
|
||||
maxGlyphCount *= 2;
|
||||
|
||||
if (hr == HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER)) {
|
||||
free(clusters);
|
||||
free(glyphs);
|
||||
free(textProperties);
|
||||
free(glyphProperties);
|
||||
|
||||
clusters = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
|
||||
glyphs = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
|
||||
textProperties = (DWRITE_SHAPING_TEXT_PROPERTIES*)
|
||||
malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_TEXT_PROPERTIES));
|
||||
glyphProperties = (DWRITE_SHAPING_GLYPH_PROPERTIES*)
|
||||
malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_GLYPH_PROPERTIES));
|
||||
|
||||
hr = analyzer->GetGlyphs(pchars, length,
|
||||
fontFace, FALSE,
|
||||
buffer->props.direction,
|
||||
&runHead->mScript, (const wchar_t*)lang, NULL, NULL, NULL, 0,
|
||||
maxGlyphs, clusters, textProperties,
|
||||
glyphs, glyphProperties, &actualGlyphs);
|
||||
goto retry_getglyphs;
|
||||
}
|
||||
if (FAILED(hr)) {
|
||||
//NS_WARNING("Analyzer failed to get glyphs.");
|
||||
if (FAILED (hr))
|
||||
{
|
||||
FAIL ("Analyzer failed to get glyphs.");
|
||||
return false;
|
||||
}
|
||||
|
||||
FLOAT advances[400];
|
||||
DWRITE_GLYPH_OFFSET offsets[400];
|
||||
|
||||
float* glyphAdvances = (float*) malloc (maxGlyphCount * sizeof (float));
|
||||
DWRITE_GLYPH_OFFSET* glyphOffsets = (DWRITE_GLYPH_OFFSET*)
|
||||
malloc(maxGlyphCount * sizeof (DWRITE_GLYPH_OFFSET));
|
||||
|
||||
/* The -2 in the following is to compensate for possible
|
||||
* alignment needed after the WORD array. sizeof(WORD) == 2. */
|
||||
unsigned int glyphs_size = (scratch_size * sizeof (int)-2)
|
||||
/ (sizeof (WORD) +
|
||||
4 + // sizeof (SCRIPT_GLYPHPROP) +
|
||||
sizeof (int) +
|
||||
8 + // sizeof (GOFFSET) +
|
||||
sizeof (uint32_t));
|
||||
ALLOCATE_ARRAY(uint32_t, vis_clusters, glyphs_size);
|
||||
unsigned int glyphs_size = (scratch_size * sizeof(int) - 2)
|
||||
/ (sizeof(WORD) +
|
||||
sizeof(DWRITE_SHAPING_GLYPH_PROPERTIES) +
|
||||
sizeof(int) +
|
||||
sizeof(DWRITE_GLYPH_OFFSET) +
|
||||
sizeof(uint32_t));
|
||||
ALLOCATE_ARRAY (uint32_t, vis_clusters, glyphs_size);
|
||||
|
||||
#undef ALLOCATE_ARRAY
|
||||
|
||||
hr = analyzer->GetGlyphPlacements(pchars,
|
||||
clusters,
|
||||
textProperties,
|
||||
length,
|
||||
glyphs,
|
||||
glyphProperties,
|
||||
actualGlyphs,
|
||||
fontFace,
|
||||
face->get_upem(),
|
||||
FALSE,
|
||||
FALSE,
|
||||
&runHead->mScript,
|
||||
NULL,
|
||||
NULL,
|
||||
NULL,
|
||||
0,
|
||||
advances,
|
||||
offsets);
|
||||
int fontEmSize = font->face->get_upem();
|
||||
if (fontEmSize < 0)
|
||||
fontEmSize = -fontEmSize;
|
||||
|
||||
if (FAILED(hr)) {
|
||||
//NS_WARNING("Analyzer failed to get glyph placements.");
|
||||
if (fontEmSize < 0)
|
||||
fontEmSize = -fontEmSize;
|
||||
double x_mult = (double) font->x_scale / fontEmSize;
|
||||
double y_mult = (double) font->y_scale / fontEmSize;
|
||||
|
||||
hr = analyzer->GetGlyphPlacements (textString,
|
||||
clusterMap, textProperties, textLength, glyphIndices,
|
||||
glyphProperties, glyphCount, fontFace, fontEmSize,
|
||||
FALSE, isRightToLeft, &runHead->mScript, localeName,
|
||||
&dwFeatures, featureRangeLengths, 1,
|
||||
glyphAdvances, glyphOffsets);
|
||||
|
||||
if (FAILED (hr))
|
||||
{
|
||||
FAIL ("Analyzer failed to get glyph placements.");
|
||||
return false;
|
||||
}
|
||||
|
||||
unsigned int glyphs_len = actualGlyphs;
|
||||
#ifdef HB_DIRECTWRITE_EXPERIMENTAL_JUSTIFICATION
|
||||
|
||||
DWRITE_JUSTIFICATION_OPPORTUNITY* justificationOpportunities =
|
||||
(DWRITE_JUSTIFICATION_OPPORTUNITY*)
|
||||
malloc (maxGlyphCount * sizeof (DWRITE_JUSTIFICATION_OPPORTUNITY));
|
||||
hr = analyzer->GetJustificationOpportunities (fontFace, fontEmSize,
|
||||
runHead->mScript, textLength, glyphCount, textString, clusterMap,
|
||||
glyphProperties, justificationOpportunities);
|
||||
|
||||
if (FAILED (hr))
|
||||
{
|
||||
FAIL ("Analyzer failed to get justification opportunities.");
|
||||
return false;
|
||||
}
|
||||
|
||||
// TODO: get lineWith from somewhere
|
||||
float lineWidth = 60000;
|
||||
|
||||
float* justifiedGlyphAdvances =
|
||||
(float*) malloc (maxGlyphCount * sizeof (float));
|
||||
DWRITE_GLYPH_OFFSET* justifiedGlyphOffsets = (DWRITE_GLYPH_OFFSET*)
|
||||
malloc (glyphCount * sizeof (DWRITE_GLYPH_OFFSET));
|
||||
hr = analyzer->JustifyGlyphAdvances (lineWidth, glyphCount, justificationOpportunities,
|
||||
glyphAdvances, glyphOffsets, justifiedGlyphAdvances, justifiedGlyphOffsets);
|
||||
|
||||
if (FAILED (hr))
|
||||
{
|
||||
FAIL ("Analyzer failed to get justified glyph advances.");
|
||||
return false;
|
||||
}
|
||||
|
||||
DWRITE_SCRIPT_PROPERTIES scriptProperties;
|
||||
hr = analyzer->GetScriptProperties (runHead->mScript, &scriptProperties);
|
||||
if (FAILED (hr))
|
||||
{
|
||||
FAIL ("Analyzer failed to get script properties.");
|
||||
return false;
|
||||
}
|
||||
uint32_t justificationCharacter = scriptProperties.justificationCharacter;
|
||||
|
||||
// if a script justificationCharacter is not space, it can have GetJustifiedGlyphs
|
||||
if (justificationCharacter != 32)
|
||||
{
|
||||
retry_getjustifiedglyphs:
|
||||
uint16_t* modifiedClusterMap = (uint16_t*) malloc (maxGlyphCount * sizeof (uint16_t));
|
||||
uint16_t* modifiedGlyphIndices = (uint16_t*) malloc (maxGlyphCount * sizeof (uint16_t));
|
||||
float* modifiedGlyphAdvances = (float*) malloc (maxGlyphCount * sizeof (float));
|
||||
DWRITE_GLYPH_OFFSET* modifiedGlyphOffsets = (DWRITE_GLYPH_OFFSET*)
|
||||
malloc (maxGlyphCount * sizeof (DWRITE_GLYPH_OFFSET));
|
||||
uint32_t actualGlyphsCount;
|
||||
hr = analyzer->GetJustifiedGlyphs (fontFace, fontEmSize, runHead->mScript,
|
||||
textLength, glyphCount, maxGlyphCount, clusterMap, glyphIndices,
|
||||
glyphAdvances, justifiedGlyphAdvances, justifiedGlyphOffsets,
|
||||
glyphProperties, &actualGlyphsCount, modifiedClusterMap, modifiedGlyphIndices,
|
||||
modifiedGlyphAdvances, modifiedGlyphOffsets);
|
||||
|
||||
if (hr == HRESULT_FROM_WIN32 (ERROR_INSUFFICIENT_BUFFER))
|
||||
{
|
||||
maxGlyphCount = actualGlyphsCount;
|
||||
free (modifiedClusterMap);
|
||||
free (modifiedGlyphIndices);
|
||||
free (modifiedGlyphAdvances);
|
||||
free (modifiedGlyphOffsets);
|
||||
|
||||
maxGlyphCount = actualGlyphsCount;
|
||||
|
||||
goto retry_getjustifiedglyphs;
|
||||
}
|
||||
if (FAILED (hr))
|
||||
{
|
||||
FAIL ("Analyzer failed to get justified glyphs.");
|
||||
return false;
|
||||
}
|
||||
|
||||
free (clusterMap);
|
||||
free (glyphIndices);
|
||||
free (glyphAdvances);
|
||||
free (glyphOffsets);
|
||||
|
||||
glyphCount = actualGlyphsCount;
|
||||
clusterMap = modifiedClusterMap;
|
||||
glyphIndices = modifiedGlyphIndices;
|
||||
glyphAdvances = modifiedGlyphAdvances;
|
||||
glyphOffsets = modifiedGlyphOffsets;
|
||||
|
||||
free(justifiedGlyphAdvances);
|
||||
free(justifiedGlyphOffsets);
|
||||
}
|
||||
else
|
||||
{
|
||||
free(glyphAdvances);
|
||||
free(glyphOffsets);
|
||||
|
||||
glyphAdvances = justifiedGlyphAdvances;
|
||||
glyphOffsets = justifiedGlyphOffsets;
|
||||
}
|
||||
|
||||
free(justificationOpportunities);
|
||||
|
||||
#endif
|
||||
|
||||
/* Ok, we've got everything we need, now compose output buffer,
|
||||
* very, *very*, carefully! */
|
||||
|
||||
/* Calculate visual-clusters. That's what we ship. */
|
||||
for (unsigned int i = 0; i < glyphs_len; i++)
|
||||
for (unsigned int i = 0; i < glyphCount; i++)
|
||||
vis_clusters[i] = -1;
|
||||
for (unsigned int i = 0; i < buffer->len; i++) {
|
||||
uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]];
|
||||
//*p = MIN (*p, buffer->info[i].cluster);
|
||||
for (unsigned int i = 0; i < buffer->len; i++)
|
||||
{
|
||||
uint32_t *p =
|
||||
&vis_clusters[log_clusters[buffer->info[i].utf16_index()]];
|
||||
*p = MIN (*p, buffer->info[i].cluster);
|
||||
}
|
||||
for (unsigned int i = 1; i < glyphs_len; i++)
|
||||
for (unsigned int i = 1; i < glyphCount; i++)
|
||||
if (vis_clusters[i] == -1)
|
||||
vis_clusters[i] = vis_clusters[i - 1];
|
||||
|
||||
#undef utf16_index
|
||||
|
||||
//if (unlikely (!buffer->ensure (glyphs_len)))
|
||||
// FAIL ("Buffer in error");
|
||||
if (unlikely (!buffer->ensure (glyphCount)))
|
||||
FAIL ("Buffer in error");
|
||||
|
||||
#undef FAIL
|
||||
|
||||
/* Set glyph infos */
|
||||
buffer->len = 0;
|
||||
for (unsigned int i = 0; i < glyphs_len; i++)
|
||||
for (unsigned int i = 0; i < glyphCount; i++)
|
||||
{
|
||||
hb_glyph_info_t *info = &buffer->info[buffer->len++];
|
||||
|
||||
info->codepoint = glyphs[i];
|
||||
info->codepoint = glyphIndices[i];
|
||||
info->cluster = vis_clusters[i];
|
||||
|
||||
/* The rest is crap. Let's store position info there for now. */
|
||||
info->mask = advances[i];
|
||||
info->var1.u32 = offsets[i].ascenderOffset;
|
||||
info->var2.u32 = -offsets[i].advanceOffset;
|
||||
info->mask = glyphAdvances[i];
|
||||
info->var1.i32 = glyphOffsets[i].advanceOffset;
|
||||
info->var2.i32 = glyphOffsets[i].ascenderOffset;
|
||||
}
|
||||
|
||||
free(clusters);
|
||||
free(glyphs);
|
||||
free(textProperties);
|
||||
free(glyphProperties);
|
||||
|
||||
/* Set glyph positions */
|
||||
buffer->clear_positions ();
|
||||
for (unsigned int i = 0; i < glyphs_len; i++)
|
||||
for (unsigned int i = 0; i < glyphCount; i++)
|
||||
{
|
||||
hb_glyph_info_t *info = &buffer->info[i];
|
||||
hb_glyph_position_t *pos = &buffer->pos[i];
|
||||
|
||||
/* TODO vertical */
|
||||
pos->x_advance = info->mask;
|
||||
pos->x_offset = backward ? -info->var1.u32 : info->var1.u32;
|
||||
pos->y_offset = info->var2.u32;
|
||||
pos->x_advance = x_mult * (int32_t) info->mask;
|
||||
pos->x_offset =
|
||||
x_mult * (isRightToLeft ? -info->var1.i32 : info->var1.i32);
|
||||
pos->y_offset = y_mult * info->var2.i32;
|
||||
}
|
||||
|
||||
if (backward)
|
||||
if (isRightToLeft)
|
||||
hb_buffer_reverse (buffer);
|
||||
|
||||
free (clusterMap);
|
||||
free (glyphIndices);
|
||||
free (textProperties);
|
||||
free (glyphProperties);
|
||||
free (glyphAdvances);
|
||||
free (glyphOffsets);
|
||||
|
||||
if (num_features)
|
||||
free (singleFeatures.features);
|
||||
|
||||
/* Wow, done! */
|
||||
return true;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue