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41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_FONTMISSINGGLYPHS_H
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#define GFX_FONTMISSINGGLYPHS_H
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#include "gfxTypes.h"
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#include "gfxRect.h"
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class gfxContext;
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/**
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* This class should not be instantiated. It's just a container
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* for some helper functions.
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*/
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class gfxFontMissingGlyphs {
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public:
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/**
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* Draw hexboxes for a missing glyph.
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* @param aContext the context to draw to
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* @param aRect the glyph-box for the glyph that is missing
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* @param aChar the UTF16 codepoint for the character
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* @param aAppUnitsPerDevPixel the appUnits to devPixel ratio we're using,
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* (so we can scale glyphs to a sensible size)
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*/
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static void DrawMissingGlyph(gfxContext *aContext,
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const gfxRect& aRect,
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uint32_t aChar,
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uint32_t aAppUnitsPerDevPixel);
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/**
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* @return the desired minimum width for a glyph-box that will allow
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* the hexboxes to be drawn reasonably.
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*/
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static gfxFloat GetDesiredMinWidth(uint32_t aChar,
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uint32_t aAppUnitsPerDevUnit);
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};
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#endif
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