1
0
forked from 0ad/0ad
0ad/source/gui/CChart.h
elexis e1014aad3b Use CGUI& instead of CGUI* so that the 50+ users stop wondering whether or not that is null and can't even be mistaken to add redundant null checks preemptively.
Remove the remaining of such checks after d3e56f0f57 removed 21 of them
already.
2c47fbd66a initialized the pointer at construction time rather than at
random conditional events later.

Differential Revision: https://code.wildfiregames.com/D2205
Comments By: Vladislav, wraitii
Tested on: gcc 9.1.0, clang 8.0.1

This was SVN commit r22741.
2019-08-21 10:12:33 +00:00

100 lines
2.3 KiB
C++

/* Copyright (C) 2019 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_CCHART
#define INCLUDED_CCHART
#include "gui/GUI.h"
#include "gui/IGUITextOwner.h"
#include "maths/Vector2D.h"
#include <vector>
struct CChartData
{
// Avoid copying the container.
NONCOPYABLE(CChartData);
MOVABLE(CChartData);
CChartData() = default;
CGUIColor m_Color;
std::vector<CVector2D> m_Points;
};
/**
* Chart for a data visualization as lines or points
*
* @see IGUIObject
*/
class CChart : public IGUITextOwner
{
GUI_OBJECT(CChart)
public:
CChart(CGUI& pGUI);
virtual ~CChart();
protected:
/**
* @see IGUIObject#HandleMessage()
*/
virtual void HandleMessage(SGUIMessage& Message);
/**
* Draws the Chart
*/
virtual void Draw();
virtual CRect GetChartRect() const;
void UpdateSeries();
void SetupText();
std::vector<CChartData> m_Series;
CVector2D m_LeftBottom, m_RightTop;
CStrW m_FormatX, m_FormatY;
std::vector<CPos> m_TextPositions;
float m_AxisWidth;
bool m_EqualX, m_EqualY;
private:
/**
* Helper functions
*/
void DrawLine(const CShaderProgramPtr& shader, const CGUIColor& color, const std::vector<float>& vertices) const;
// Draws the triangle sequence so that the each next triangle has a common edge with the previous one.
// If we need to draw n triangles, we need only n + 2 points.
void DrawTriangleStrip(const CShaderProgramPtr& shader, const CGUIColor& color, const std::vector<float>& vertices) const;
// Represents axes as triangles and draws them with DrawTriangleStrip.
void DrawAxes(const CShaderProgramPtr& shader) const;
CSize AddFormattedValue(const CStrW& format, const float value, const CStrW& font, const float buffer_zone);
void UpdateBounds();
};
#endif // INCLUDED_CCHART