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TGLPadPainter.h
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1// @(#)root/gl:$Id$
2// Author: Timur Pocheptsov 06/05/2009
3
4/*************************************************************************
5 * Copyright (C) 1995-2009, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12#ifndef ROOT_TGLPadPainter
13#define ROOT_TGLPadPainter
14
15#include "TVirtualPadPainter.h"
16#include "TGLFontManager.h"
17#include "TGLPadUtils.h"
18#include "TPoint.h"
19
20#include <vector>
21
22class TLinearGradient;
23class TRadialGradient;
24/*
25The _main_ purpose of TGLPadPainter is to enable 2d gl raphics
26inside standard TPad/TCanvas.
27*/
29private:
34
35 std::vector<Double_t> fVs;//Vertex buffer for tesselator.
36
39
41
42 std::vector<TPoint> fPoly;
44
46
47 template<class Char_t>
49public:
51
52 //Final overriders for TVirtualPadPainter pure virtual functions.
53 //1. Part, which simply delegates to TVirtualX.
54 //Line attributes.
55 Color_t GetLineColor() const override;
56 Style_t GetLineStyle() const override;
57 Width_t GetLineWidth() const override;
58
59 void SetLineColor(Color_t lcolor) override;
60 void SetLineStyle(Style_t lstyle) override;
61 void SetLineWidth(Width_t lwidth) override;
62 //Fill attributes.
63 Color_t GetFillColor() const override;
64 Style_t GetFillStyle() const override;
65 Bool_t IsTransparent() const override;
66
67 void SetFillColor(Color_t fcolor) override;
68 void SetFillStyle(Style_t fstyle) override;
69 void SetOpacity(Int_t percent) override;
70 //Text attributes.
71 Short_t GetTextAlign() const override;
72 Float_t GetTextAngle() const override;
73 Color_t GetTextColor() const override;
74 Font_t GetTextFont() const override;
75 Float_t GetTextSize() const override;
76 Float_t GetTextMagnitude() const override;
77
78 void SetTextAlign(Short_t align) override;
79 void SetTextAngle(Float_t tangle) override;
80 void SetTextColor(Color_t tcolor) override;
81 void SetTextFont(Font_t tfont) override;
82 void SetTextSize(Float_t tsize) override;
83 void SetTextSizePixels(Int_t npixels) override;
84
85 //2. "Off-screen management" part.
87 void ClearDrawable() override;
88 void CopyDrawable(Int_t device, Int_t px, Int_t py) override;
89 void DestroyDrawable(Int_t device) override;
90 void SelectDrawable(Int_t device) override;
91
92 void InitPainter() override;
93 void InvalidateCS() override;
94 void LockPainter() override;
95
97 void DrawLineNDC(Double_t u1, Double_t v1, Double_t u2, Double_t v2) override;
98
100 //TPad needs double and float versions.
101 void DrawFillArea(Int_t n, const Double_t *x, const Double_t *y) override;
102 void DrawFillArea(Int_t n, const Float_t *x, const Float_t *y) override;
103
104 //TPad needs both double and float versions of DrawPolyLine.
105 void DrawPolyLine(Int_t n, const Double_t *x, const Double_t *y) override;
106 void DrawPolyLine(Int_t n, const Float_t *x, const Float_t *y) override;
107 void DrawPolyLineNDC(Int_t n, const Double_t *u, const Double_t *v) override;
108
109 //TPad needs both versions.
110 void DrawPolyMarker(Int_t n, const Double_t *x, const Double_t *y) override;
111 void DrawPolyMarker(Int_t n, const Float_t *x, const Float_t *y) override;
112
113 void DrawText(Double_t x, Double_t y, const char *text, ETextMode mode) override;
114 void DrawText(Double_t, Double_t, const wchar_t *, ETextMode) override;
115 void DrawTextNDC(Double_t x, Double_t y, const char *text, ETextMode mode) override;
116 void DrawTextNDC(Double_t, Double_t, const wchar_t *, ETextMode) override;
117
118 //jpg, png, gif and bmp output.
119 void SaveImage(TVirtualPad *pad, const char *fileName, Int_t type) const override;
120
121 //TASImage support.
122 void DrawPixels(const unsigned char *pixelData, UInt_t width, UInt_t height,
123 Int_t dstX, Int_t dstY, Bool_t enableBlending) override;
124
125
126private:
127
128 //Attention! GL_PROJECTION will become
129 //the current matrix after these calls.
130 void SaveProjectionMatrix()const;
131 void RestoreProjectionMatrix()const;
132
133 //Attention! GL_MODELVIEW will become the
134 //current matrix after these calls.
135 void SaveModelviewMatrix()const;
136 void RestoreModelviewMatrix()const;
137
138 void SaveViewport();
139 void RestoreViewport();
140
141 void DrawPolyMarker();
142
143 //Aux. functions for a gradient and solid fill:
144 void DrawPolygonWithGradient(Int_t n, const Double_t *x, const Double_t *y);
145 //
146 void DrawGradient(const TLinearGradient *gradient, Int_t n, const Double_t *x, const Double_t *y);
147 void DrawGradient(const TRadialGradient *gradient, Int_t n, const Double_t *x, const Double_t *y);
148 //
149 void DrawTesselation(Int_t n, const Double_t *x, const Double_t *y);
150
153
155};
156
157#endif
158
#define h(i)
Definition RSha256.hxx:106
short Style_t
Definition RtypesCore.h:82
short Color_t
Definition RtypesCore.h:85
char Char_t
Definition RtypesCore.h:37
short Width_t
Definition RtypesCore.h:84
float Float_t
Definition RtypesCore.h:57
short Font_t
Definition RtypesCore.h:81
short Short_t
Definition RtypesCore.h:39
#define ClassDefOverride(name, id)
Definition Rtypes.h:346
Option_t Option_t SetLineWidth
Option_t Option_t SetFillStyle
Option_t Option_t SetTextSize
Option_t Option_t DrawFillArea
Option_t Option_t SetLineColor
Option_t Option_t TPoint TPoint const char x2
Option_t Option_t TPoint TPoint const char x1
Option_t Option_t SetTextFont
Option_t Option_t TPoint TPoint const char mode
Option_t Option_t TPoint TPoint const char y2
Option_t Option_t SetFillColor
Option_t Option_t TPoint TPoint const char DrawLine
Option_t Option_t width
Option_t Option_t TPoint TPoint percent
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t Int_t Int_t UInt_t UInt_t Rectangle_t Int_t Int_t Window_t TString Int_t GCValues_t GetPrimarySelectionOwner GetDisplay GetScreen GetColormap GetNativeEvent const char const char dpyName wid window const char font_name cursor keysym reg const char only_if_exist regb h Point_t winding char text const char depth char const char Int_t count const char ColorStruct_t color const char Pixmap_t Pixmap_t PictureAttributes_t attr const char char ret_data h unsigned char height h Atom_t Int_t ULong_t ULong_t unsigned char prop_list Atom_t Atom_t Atom_t Time_t type
Option_t Option_t TPoint TPoint DrawText
Option_t Option_t TPoint TPoint SetOpacity
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t height
Option_t Option_t TPoint TPoint const char text
Option_t Option_t TPoint TPoint const char y1
A FreeType GL font manager.
A wrapper class for FTFont.
"Delegating" part of TGLPadPainter.
void DrawPixels(const unsigned char *pixelData, UInt_t width, UInt_t height, Int_t dstX, Int_t dstY, Bool_t enableBlending) override
Float_t GetTextSize() const override
Delegate to gVirtualX.
void DestroyDrawable(Int_t device) override
Not required at the moment.
void DrawGradient(const TLinearGradient *gradient, Int_t n, const Double_t *x, const Double_t *y)
Rgl::Pad::Tesselator fTess
Float_t GetTextAngle() const override
Delegate to gVirtualX.
void DrawLineNDC(Double_t u1, Double_t v1, Double_t u2, Double_t v2) override
Draw line segment in NDC coordinates.
Style_t GetLineStyle() const override
Delegate to gVirtualX.
Color_t GetTextColor() const override
Delegate to gVirtualX.
std::vector< TPoint > fPoly
void DrawTextHelper(Double_t x, Double_t y, const Char_t *text, ETextMode mode)
TGLPadPainter(const TGLPadPainter &rhs)
void DrawBox(Double_t x1, Double_t y1, Double_t x2, Double_t y2, EBoxMode mode) override
Draw filled or hollow box.
void SetTextSizePixels(Int_t npixels) override
Delegate to gVirtualX.
void DrawPolygonWithGradient(Int_t n, const Double_t *x, const Double_t *y)
At the moment I assume both linear and radial gradients will work the same way - using a stencil buff...
void InvalidateCS() override
When TPad::Range for gPad is called, projection must be changed in OpenGL.
void ClearDrawable() override
Not required at the moment.
Color_t GetLineColor() const override
Delegate to gVirtualX.
void DrawPolyLineNDC(Int_t n, const Double_t *u, const Double_t *v) override
Poly line in NDC.
TGLPadPainter & operator=(const TGLPadPainter &rhs)
void DrawPolyLine(Int_t n, const Double_t *x, const Double_t *y) override
Draw poly-line in user coordinates.
void SetTextAlign(Short_t align) override
Delegate to gVirtualX.
Rgl::Pad::GLLimits fLimits
void SetTextAngle(Float_t tangle) override
Delegate to gVirtualX.
void DrawTextNDC(Double_t x, Double_t y, const char *text, ETextMode mode) override
Draw text in NDC.
void SetTextColor(Color_t tcolor) override
Delegate to gVirtualX.
void InitPainter() override
Init gl-pad painter:
void SelectDrawable(Int_t device) override
For gVirtualX this means select pixmap (or window) and all subsequent drawings will go into this pixm...
TGLFontManager fFM
Rgl::Pad::PolygonStippleSet fSSet
Rgl::Pad::MarkerPainter fMarker
void DrawPolyMarker()
Poly-marker.
void SaveViewport()
Extract and save the current viewport.
void CopyDrawable(Int_t device, Int_t px, Int_t py) override
Not required at the moment.
void SaveImage(TVirtualPad *pad, const char *fileName, Int_t type) const override
Using TImage save frame-buffer contents as a picture.
Short_t GetTextAlign() const override
Delegate to gVirtualX.
Style_t GetFillStyle() const override
Delegate to gVirtualX.
Font_t GetTextFont() const override
Delegate to gVirtualX.
void RestoreProjectionMatrix() const
Restore the projection matrix.
void SetLineStyle(Style_t lstyle) override
Delegate to gVirtualX.
void LockPainter() override
Locked state of painter means, that GL context can be invalid, so no GL calls can be executed.
Float_t GetTextMagnitude() const override
Delegate to gVirtualX.
Width_t GetLineWidth() const override
Delegate to gVirtualX.
void DrawTesselation(Int_t n, const Double_t *x, const Double_t *y)
Color_t GetFillColor() const override
Delegate to gVirtualX.
Int_t CreateDrawable(UInt_t w, UInt_t h) override
Not required at the moment.
Bool_t IsTransparent() const override
Delegate to gVirtualX.
void RestoreModelviewMatrix() const
Restore the modelview matrix.
std::vector< Double_t > fVs
Bool_t fIsHollowArea
void SaveProjectionMatrix() const
Save the projection matrix.
void SaveModelviewMatrix() const
Save the modelview matrix.
void RestoreViewport()
Restore the saved viewport.
To make it possible to use GL for 2D graphic in a TPad/TCanvas.
TVirtualPad is an abstract base class for the Pad and Canvas classes.
Definition TVirtualPad.h:51
Double_t y[n]
Definition legend1.C:17
Double_t x[n]
Definition legend1.C:17
const Int_t n
Definition legend1.C:16