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111 lines
2.7 KiB
C++
111 lines
2.7 KiB
C++
//
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// TextRenderer.h
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// interface/src/ui
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//
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// Created by Andrzej Kapolka on 4/26/13.
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// Copyright 2013 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#ifndef hifi_TextRenderer_h
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#define hifi_TextRenderer_h
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#include <gpu/GPUConfig.h>
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#include <glm/glm.hpp>
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#include <unordered_map>
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#include <QColor>
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#include <QFont>
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#include <QFontMetrics>
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#include <QHash>
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#include <QImage>
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#include <QVector>
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#include <gpu/Resource.h>
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#include <gpu/Stream.h>
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// a special "character" that renders as a solid block
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const char SOLID_BLOCK_CHAR = 127;
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// the standard sans serif font family
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#define SANS_FONT_FAMILY "Helvetica"
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// the standard sans serif font family
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#define SERIF_FONT_FAMILY "Timeless"
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// the standard mono font family
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#define MONO_FONT_FAMILY "Courier"
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// the Inconsolata font family
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#ifdef Q_OS_WIN
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#define INCONSOLATA_FONT_FAMILY "Fixedsys"
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#define INCONSOLATA_FONT_WEIGHT QFont::Normal
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#else
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#define INCONSOLATA_FONT_FAMILY "Inconsolata"
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#define INCONSOLATA_FONT_WEIGHT QFont::Bold
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#endif
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class TextRenderer {
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public:
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enum EffectType { NO_EFFECT, SHADOW_EFFECT, OUTLINE_EFFECT };
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class Properties {
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public:
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QString font;
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float pointSize;
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EffectType effect;
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int effectThickness;
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QColor color;
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};
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static TextRenderer* getInstance(const char* family, float pointSize = -1, int weight = -1, bool italic = false,
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EffectType effect = NO_EFFECT, int effectThickness = 1, const QColor& color = QColor(255, 255, 255));
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~TextRenderer();
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// returns the height of the tallest character
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int calculateHeight(const char * str) const;
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int calculateHeight(const QString & str) const;
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int computeWidth(char ch) const;
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int computeWidth(const QChar & ch) const;
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int computeWidth(const QString & str) const;
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int computeWidth(const char * str) const;
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// also returns the height of the tallest character
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inline int draw(int x, int y, const char* str,
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const glm::vec4& color = glm::vec4(-1),
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float maxWidth = -1
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) {
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return drawString(x, y, QString(str), color, maxWidth);
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}
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float drawString(
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float x, float y,
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const QString & str,
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const glm::vec4& color = glm::vec4(-1),
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float maxWidth = -1);
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private:
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TextRenderer(const Properties& properties);
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// the type of effect to apply
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const EffectType _effectType;
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// the thickness of the effect
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const int _effectThickness;
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const float _pointSize;
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// text color
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const QColor _color;
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friend class Font;
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Font * _font;
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};
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#endif // hifi_TextRenderer_h
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