converted to 16 colors
[wxWidgets.git] / include / wx / motif / dc.h
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1/////////////////////////////////////////////////////////////////////////////
2// Name: dc.h
3// Purpose: wxDC class
4// Author: Julian Smart
5// Modified by:
6// Created: 17/09/98
7// RCS-ID: $Id$
8// Copyright: (c) Julian Smart
af0bb3b1 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef _WX_DC_H_
13#define _WX_DC_H_
14
15#ifdef __GNUG__
af0bb3b1 16 #pragma interface "dc.h"
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17#endif
18
19#include "wx/pen.h"
20#include "wx/brush.h"
21#include "wx/icon.h"
22#include "wx/font.h"
23#include "wx/gdicmn.h"
24
25//-----------------------------------------------------------------------------
26// constants
27//-----------------------------------------------------------------------------
28
29#ifndef MM_TEXT
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30 #define MM_TEXT 0
31 #define MM_ISOTROPIC 1
32 #define MM_ANISOTROPIC 2
33 #define MM_LOMETRIC 3
34 #define MM_HIMETRIC 4
35 #define MM_TWIPS 5
36 #define MM_POINTS 6
37 #define MM_METRIC 7
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38#endif
39
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40//-----------------------------------------------------------------------------
41// wxDC
42//-----------------------------------------------------------------------------
43
af0bb3b1 44class WXDLLEXPORT wxDC : public wxDCBase
9b6dbb09 45{
af0bb3b1 46 DECLARE_DYNAMIC_CLASS(wxDC)
9b6dbb09 47
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48public:
49 wxDC();
50 ~wxDC() { }
9b6dbb09 51
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52 // implement base class pure virtuals
53 // ----------------------------------
9b6dbb09 54
af0bb3b1 55 virtual void DestroyClippingRegion();
9b6dbb09 56
af0bb3b1 57 virtual wxSize GetPPI() const;
9b6dbb09 58
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59 virtual void SetMapMode(int mode);
60 virtual void SetUserScale(double x, double y);
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61 virtual void SetLogicalScale(double x, double y);
62 virtual void SetLogicalOrigin(long x, long y);
63 virtual void SetDeviceOrigin(long x, long y);
64 virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
9b6dbb09 65
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66protected:
67 virtual void DoDrawIcon(const wxIcon& icon, long x, long y);
68 virtual void DoDrawBitmap(const wxBitmap &bmp, long x, long y,
69 bool useMask = FALSE);
9b6dbb09 70
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71 virtual void DoSetClippingRegion(long x, long y,
72 long width, long height);
73 virtual void DoGetSize(int *width, int *height) const;
74 virtual void DoGetSizeMM(int* width, int* height) const;
9b6dbb09 75
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76public:
77 void ComputeScaleAndOrigin();
78
79 long XDEV2LOG(long x) const
9b6dbb09 80 {
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81 long new_x = x - m_deviceOriginX;
82 if (new_x > 0)
83 return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
84 else
85 return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
9b6dbb09 86 }
af0bb3b1 87 long XDEV2LOGREL(long x) const
9b6dbb09 88 {
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89 if (x > 0)
90 return (long)((double)(x) / m_scaleX + 0.5);
91 else
92 return (long)((double)(x) / m_scaleX - 0.5);
9b6dbb09 93 }
af0bb3b1 94 long YDEV2LOG(long y) const
9b6dbb09 95 {
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96 long new_y = y - m_deviceOriginY;
97 if (new_y > 0)
98 return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
99 else
100 return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
9b6dbb09 101 }
af0bb3b1 102 long YDEV2LOGREL(long y) const
9b6dbb09 103 {
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104 if (y > 0)
105 return (long)((double)(y) / m_scaleY + 0.5);
106 else
107 return (long)((double)(y) / m_scaleY - 0.5);
9b6dbb09 108 }
af0bb3b1 109 long XLOG2DEV(long x) const
9b6dbb09 110 {
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111 long new_x = x - m_logicalOriginX;
112 if (new_x > 0)
113 return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
114 else
115 return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
9b6dbb09 116 }
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117 // Without device translation, for backing pixmap purposes
118 long XLOG2DEV_2(long x) const
9b6dbb09 119 {
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120 long new_x = x - m_logicalOriginX;
121 if (new_x > 0)
122 return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX;
123 else
124 return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX;
9b6dbb09 125 }
af0bb3b1 126 long XLOG2DEVREL(long x) const
9b6dbb09 127 {
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128 if (x > 0)
129 return (long)((double)(x) * m_scaleX + 0.5);
130 else
131 return (long)((double)(x) * m_scaleX - 0.5);
9b6dbb09 132 }
af0bb3b1 133 long YLOG2DEV(long y) const
9b6dbb09 134 {
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135 long new_y = y - m_logicalOriginY;
136 if (new_y > 0)
137 return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
138 else
139 return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
9b6dbb09 140 }
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141 // Without device translation, for backing pixmap purposes
142 long YLOG2DEV_2(long y) const
9b6dbb09 143 {
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144 long new_y = y - m_logicalOriginY;
145 if (new_y > 0)
146 return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY;
147 else
148 return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY;
9b6dbb09 149 }
af0bb3b1 150 long YLOG2DEVREL(long y) const
9b6dbb09 151 {
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152 if (y > 0)
153 return (long)((double)(y) * m_scaleY + 0.5);
154 else
155 return (long)((double)(y) * m_scaleY - 0.5);
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156 }
157
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158 void SetInternalDeviceOrigin( long x, long y );
159 void GetInternalDeviceOrigin( long *x, long *y );
9b6dbb09 160
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161public:
162 // not sure what for, but what is a mm on a screen you don't know the size of?
163 double m_mm_to_pix_x,m_mm_to_pix_y;
9b6dbb09 164
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165 // If un-scrolled is non-zero or d.o. changes with scrolling. Set using
166 // SetInternalDeviceOrigin().
167 long m_internalDeviceOriginX,m_internalDeviceOriginY;
9b6dbb09 168
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169 // To be set by external classes such as wxScrolledWindow using
170 // SetDeviceOrigin()
171 long m_externalDeviceOriginX,m_externalDeviceOriginY;
7bcb11d3 172
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173 // recompute scale?
174 bool m_needComputeScaleX, m_needComputeScaleY;
9b6dbb09 175
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176 // wxPSDC wants to have this. Will disappear.
177 float m_scaleFactor;
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178};
179
180#endif
181 // _WX_DC_H_