gecko/gfx/thebes/gfxFontMissingGlyphs.h

40 lines
1.4 KiB
C++

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