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115 lines
3.6 KiB
C++
115 lines
3.6 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2012 Ceetron AS
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//
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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//##################################################################################################
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#pragma once
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#include "cvfOverlayItem.h"
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#include "cvfArray.h"
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#include "cvfCamera.h"
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#include "cvfString.h"
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#include "cvfRect.h"
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namespace cvf {
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class Font;
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class ShaderProgram;
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class MatrixState;
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class TextDrawer;
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class LegendScalarMapper;
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//==================================================================================================
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//
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// Helper for storing layout info
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//
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//==================================================================================================
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struct OverlayColorLegendLayoutInfo
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{
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OverlayColorLegendLayoutInfo(const Vec2ui& pos, const Vec2ui& setSize)
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{
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position = pos;
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size = setSize;
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}
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float charHeight;
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float lineSpacing;
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Vec2f margins;
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float tickX;
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float x0, x1;
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Rectf legendRect;
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ref<DoubleArray> tickPixelPos;
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Vec2ui position;
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Vec2ui size;
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};
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//==================================================================================================
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//
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// Overlay color legend
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//
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//==================================================================================================
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class OverlayColorLegend : public OverlayItem
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{
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public:
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OverlayColorLegend(Font* font);
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virtual ~OverlayColorLegend();
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virtual Vec2ui sizeHint();
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virtual Vec2ui maximumSize();
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virtual Vec2ui minimumSize();
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void setScalarMapper(const LegendScalarMapper* scalarMapper);
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virtual void render(OpenGLContext* oglContext, const Vec2ui& position, const Vec2ui& size);
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virtual void renderSoftware(OpenGLContext* oglContext, const Vec2ui& position, const Vec2ui& size);
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void setSizeHint(const Vec2ui& size);
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void setColor(const Color3f& color);
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const Color3f& color() const;
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void setTitle(const String& title);
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String title() const;
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protected:
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void render(OpenGLContext* oglContext, const Vec2ui& position, const Vec2ui& size, bool software);
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virtual void renderLegend(OpenGLContext* oglContext, OverlayColorLegendLayoutInfo* layout, const MatrixState& matrixState);
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virtual void renderLegendImmediateMode(OpenGLContext* oglContext, OverlayColorLegendLayoutInfo* layout);
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virtual void setupTextDrawer(TextDrawer* textDrawer, OverlayColorLegendLayoutInfo* layout);
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void layoutInfo(OverlayColorLegendLayoutInfo* layout);
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protected:
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DoubleArray m_tickValues; // Ticks between each level + top and bottom of legend (n+1 entries)
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std::vector<bool> m_visibleTickLabels; // Skip tick labels ending up on top of previous visible label
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Vec2ui m_sizeHint; // Pixel size of the color legend area
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Color3f m_color;
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std::vector<String> m_titleStrings;
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ref<Font> m_font;
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cref<LegendScalarMapper> m_scalarMapper;
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};
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}
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