mirror of
https://github.com/fltk/fltk.git
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Reorganizing color drawing code.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11045 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Matthias Melcher
+4
-20
@@ -133,17 +133,6 @@ protected:
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int rstackptr;
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static const int region_stack_max = FL_REGION_STACK_SIZE - 1;
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Fl_Region rstack[FL_REGION_STACK_SIZE];
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#ifdef WIN32
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int numcount;
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int counts[20];
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#elif defined(__APPLE__)
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// not needed
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#elif defined(FL_PORTING)
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# pragma message "FL_PORTING: define variables for Fl_Graphics_Driver if needed."
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// not needed
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#else
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// not needed in X11
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#endif
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Fl_Font_Descriptor *font_descriptor_;
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protected:
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@@ -175,8 +164,6 @@ protected:
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friend void fl_draw(int angle, const char *str, int n, int x, int y);
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friend void fl_rtl_draw(const char *str, int n, int x, int y);
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friend void fl_font(Fl_Font face, Fl_Fontsize size);
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friend void fl_color(Fl_Color c);
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friend void fl_color(uchar r, uchar g, uchar b);
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friend void fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D, int L);
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friend void fl_draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D, int L);
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@@ -203,11 +190,6 @@ protected:
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virtual void draw(int angle, const char *str, int n, int x, int y) {}
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/** \brief see fl_rtl_draw(const char *str, int n, int x, int y). */
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virtual void rtl_draw(const char *str, int n, int x, int y) {};
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/** \brief see fl_color(Fl_Color c). */
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virtual void color(Fl_Color c) {color_ = c;}
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/** \brief see fl_color(uchar r, uchar g, uchar b). */
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virtual void color(uchar r, uchar g, uchar b) {}
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// Images
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/** \brief see fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D, int L). */
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@@ -261,8 +243,6 @@ public:
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virtual int height() {return size();}
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/** \brief see fl_descent(). */
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virtual int descent() {return 0;}
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/** \brief see fl_color(void). */
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Fl_Color color() {return color_;}
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/** Returns a pointer to the current Fl_Font_Descriptor for the graphics driver */
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inline Fl_Font_Descriptor *font_descriptor() { return font_descriptor_;}
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/** Sets the current Fl_Font_Descriptor for the graphics driver */
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@@ -336,6 +316,10 @@ public:
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virtual void curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3);
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// --- implementation is in src/fl_line_style.cxx which includes src/cfg_gfx/xxx_line_style.cxx
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virtual void line_style(int style, int width=0, char* dashes=0) = 0;
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// --- implementation is in src/fl_color.cxx which includes src/cfg_gfx/xxx_color.cxx
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virtual void color(Fl_Color c) { color_ = c; }
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virtual Fl_Color color() { return color_; }
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virtual void color(uchar r, uchar g, uchar b) = 0;
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protected:
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// --- implementation is in src/fl_vertex.cxx which includes src/cfg_gfx/xxx_rect.cxx
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@@ -53,10 +53,11 @@ const char *Fl_OpenGL_Display_Device::class_id = "Fl_OpenGL_Display_Device";
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#endif
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// ------ end of separate file! ------------------------------------------------
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#include "cfg_gfx/opengl_arci.cxx"
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#include "cfg_gfx/opengl_color.cxx"
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#include "cfg_gfx/opengl_line_style.cxx"
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#include "cfg_gfx/opengl_rect.cxx"
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#include "cfg_gfx/opengl_vertex.cxx"
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#include "cfg_gfx/opengl_arci.cxx"
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#include "cfg_gfx/opengl_line_style.cxx"
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#if defined(__APPLE__)
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@@ -34,6 +34,9 @@
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This class is implemented only on the MSWindows platform.
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*/
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class FL_EXPORT Fl_GDI_Graphics_Driver : public Fl_Graphics_Driver {
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protected:
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int numcount;
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int counts[20];
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public:
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static const char *class_id;
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const char *class_name() {return class_id;};
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@@ -101,6 +104,9 @@ protected:
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void pie(int x, int y, int w, int h, double a1, double a2);
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// --- implementation is in src/fl_line_style.cxx which includes src/cfg_gfx/xxx_line_style.cxx
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void line_style(int style, int width=0, char* dashes=0);
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// --- implementation is in src/fl_color.cxx which includes src/cfg_gfx/xxx_color.cxx
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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};
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@@ -1,9 +1,9 @@
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//
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// "$Id$"
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//
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// WIN32 color functions for the Fast Light Tool Kit (FLTK).
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// MSWidnows' GDI color functions for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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// Copyright 1998-2016 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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@@ -21,15 +21,17 @@
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// changes can be made. Not to be confused with the X colormap, which
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// I try to hide completely.
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// SGI compiler seems to have problems with unsigned char arguments
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// being used to index arrays. So I always copy them to an integer
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// before use.
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#include <config.h>
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#include <FL/Fl.H>
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#include <FL/x.H>
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#include <FL/fl_draw.H>
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// FIXME: all the global functions in this file should probably be protected
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// members of the driver class. Starting with 1.4 we will allow multiple drivers
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// to co-exist, creating conflicts with multipe mapping.
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// FIXME: maybe we can forget about color mapping and assume RGB?
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static unsigned fl_cmap[256] = {
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#include "fl_cmap.h" // this is a file produced by "cmap.cxx":
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};
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@@ -36,9 +36,6 @@ public:
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static const char *class_id;
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const char *class_name() {return class_id;};
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void draw(const char* str, int n, int x, int y);
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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// --- line and polygon drawing with integer coordinates
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void point(int x, int y);
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void rect(int x, int y, int w, int h);
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@@ -85,6 +82,9 @@ public:
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void pie(int x, int y, int w, int h, double a1, double a2);
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// --- implementation is in src/fl_line_style.cxx which includes src/cfg_gfx/xxx_line_style.cxx
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void line_style(int style, int width=0, char* dashes=0);
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// --- implementation is in src/fl_color.cxx which includes src/cfg_gfx/xxx_color.cxx
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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};
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@@ -0,0 +1,70 @@
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//
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// "$Id$"
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//
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// Color functions for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2016 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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/**
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\file fl_color.cxx
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\brief Color handling
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*/
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#include "opengl.H"
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#include <FL/gl.h>
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// Implementation of fl_color(i), fl_color(r,g,b).
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void Fl_OpenGL_Graphics_Driver::color(Fl_Color i) {
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// FIXME: do we need the code below?
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/*
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#if HAVE_GL_OVERLAY
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#if defined(WIN32)
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if (fl_overlay && fl_overlay_depth) {
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if (fl_overlay_depth < 8) {
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// only black & white produce the expected colors. This could
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// be improved by fixing the colormap set in Fl_Gl_Overlay.cxx
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int size = 1<<fl_overlay_depth;
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if (!i) glIndexi(size-2);
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else if (i >= size-2) glIndexi(size-1);
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else glIndexi(i);
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} else {
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glIndexi(i ? i : FL_GRAY_RAMP);
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}
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return;
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}
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#else
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if (fl_overlay) {glIndexi(int(fl_xpixel(i))); return;}
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#endif
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#endif
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*/
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if (i & 0xffffff00) {
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unsigned rgb = (unsigned)i;
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fl_color((uchar)(rgb >> 24), (uchar)(rgb >> 16), (uchar)(rgb >> 8));
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} else {
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Fl_Graphics_Driver::color(i);
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uchar red, green, blue;
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Fl::get_color(i, red, green, blue);
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glColor3ub(red, green, blue);
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}
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}
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void Fl_OpenGL_Graphics_Driver::color(uchar r,uchar g,uchar b) {
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Fl_Graphics_Driver::color( fl_rgb_color(r, g, b) );
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glColor3ub(r,g,b);
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}
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//
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// End of "$Id$".
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//
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@@ -32,15 +32,6 @@ void Fl_OpenGL_Graphics_Driver::draw(const char* str, int n, int x, int y) {
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gl_draw(str, n, x, y);
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}
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void Fl_OpenGL_Graphics_Driver::color(Fl_Color c) {
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gl_color(c);
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}
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void Fl_OpenGL_Graphics_Driver::color(uchar r, uchar g, uchar b) {
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unsigned int c = (r<<24)|(g<<16)|(b<<8);
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gl_color(c);
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}
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// --- line and polygon drawing with integer coordinates
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void Fl_OpenGL_Graphics_Driver::point(int x, int y) {
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@@ -43,8 +43,8 @@ class FL_EXPORT Fl_Quartz_Graphics_Driver : public Fl_Graphics_Driver {
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public:
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static const char *class_id;
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const char *class_name() {return class_id;};
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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// void color(Fl_Color c);
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// void color(uchar r, uchar g, uchar b);
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void draw(const char* str, int n, int x, int y);
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#ifdef __APPLE__
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void draw(const char *str, int n, float x, float y);
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@@ -111,6 +111,9 @@ protected:
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void pie(int x, int y, int w, int h, double a1, double a2);
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// --- implementation is in src/fl_line_style.cxx which includes src/cfg_gfx/xxx_line_style.cxx
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void line_style(int style, int width=0, char* dashes=0);
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// --- implementation is in src/fl_color.cxx which includes src/cfg_gfx/xxx_color.cxx
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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};
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@@ -3,7 +3,7 @@
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//
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// MacOS color functions for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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// Copyright 1998-2016 by Bill Spitzak and others.
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//
|
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// This library is free software. Distribution and use rights are outlined in
|
||||
// the file "COPYING" which should have been included with this file. If this
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@@ -30,7 +30,7 @@
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#include <FL/fl_draw.H>
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static unsigned fl_cmap[256] = {
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#include "fl_cmap.h" // this is a file produced by "cmap.cxx":
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#include "../fl_cmap.h" // this is a file produced by "cmap.cxx":
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};
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void Fl_Quartz_Graphics_Driver::color(Fl_Color i) {
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@@ -68,6 +68,7 @@ void Fl_Quartz_Graphics_Driver::color(uchar r, uchar g, uchar b) {
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CGContextSetRGBStrokeColor(fl_gc, fr, fg, fb, 1.0f);
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}
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// FIXME: this function should not be here! It's not part of the driver.
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void Fl::set_color(Fl_Color i, unsigned c) {
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if (fl_cmap[i] != c) {
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fl_cmap[i] = c;
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@@ -100,6 +100,9 @@ protected:
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void pie(int x, int y, int w, int h, double a1, double a2);
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// --- implementation is in src/fl_line_style.cxx which includes src/cfg_gfx/xxx_line_style.cxx
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void line_style(int style, int width=0, char* dashes=0);
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// --- implementation is in src/fl_color.cxx which includes src/cfg_gfx/xxx_color.cxx
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void color(Fl_Color c);
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void color(uchar r, uchar g, uchar b);
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};
|
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|
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|
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@@ -0,0 +1,351 @@
|
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//
|
||||
// "$Id$"
|
||||
//
|
||||
// Color functions for the Fast Light Tool Kit (FLTK).
|
||||
//
|
||||
// Copyright 1998-2010 by Bill Spitzak and others.
|
||||
//
|
||||
// This library is free software. Distribution and use rights are outlined in
|
||||
// the file "COPYING" which should have been included with this file. If this
|
||||
// file is missing or damaged, see the license at:
|
||||
//
|
||||
// http://www.fltk.org/COPYING.php
|
||||
//
|
||||
// Please report all bugs and problems on the following page:
|
||||
//
|
||||
// http://www.fltk.org/str.php
|
||||
//
|
||||
|
||||
// Implementation of fl_color(i), fl_color(r,g,b).
|
||||
|
||||
// FIXME: all the global functions in this file should probably be protected
|
||||
// members of the driver class. Starting with 1.4 we will allow multiple drivers
|
||||
// to co-exist, creating conflicts with multipe mapping.
|
||||
|
||||
// FIXME: maybe we can forget about color mapping and assume RGB?
|
||||
|
||||
// Also code to look at the X visual and figure out the best way to turn
|
||||
// a color into a pixel value.
|
||||
|
||||
// SGI compiler seems to have problems with unsigned char arguments
|
||||
// being used to index arrays. So I always copy them to an integer
|
||||
// before use.
|
||||
|
||||
# include "Fl_XColor.H"
|
||||
# include <FL/Fl.H>
|
||||
# include <FL/x.H>
|
||||
# include <FL/fl_draw.H>
|
||||
|
||||
////////////////////////////////////////////////////////////////
|
||||
// figure_out_visual() calculates masks & shifts for generating
|
||||
// pixels in true-color visuals:
|
||||
|
||||
uchar fl_redmask; /**< color mask used in current color map handling */
|
||||
uchar fl_greenmask; /**< color mask used in current color map handling */
|
||||
uchar fl_bluemask; /**< color mask used in current color map handling */
|
||||
|
||||
int fl_redshift; /**< color shift used in current color map handling */
|
||||
int fl_greenshift; /**< color shift used in current color map handling */
|
||||
int fl_blueshift; /**< color shift used in current color map handling */
|
||||
int fl_extrashift; /**< color shift used in current color map handling */
|
||||
|
||||
static uchar beenhere;
|
||||
|
||||
static void figure_out_visual() {
|
||||
beenhere = 1;
|
||||
if (!fl_visual->red_mask || !fl_visual->green_mask || !fl_visual->blue_mask){
|
||||
# if USE_COLORMAP
|
||||
fl_redmask = 0;
|
||||
return;
|
||||
# else
|
||||
Fl::fatal("Requires true color visual");
|
||||
# endif
|
||||
}
|
||||
|
||||
// get the bit masks into a more useful form:
|
||||
int i,j,m;
|
||||
|
||||
for (i = 0, m = 1; m; i++, m<<=1) if (fl_visual->red_mask & m) break;
|
||||
for (j = i; m; j++, m<<=1) if (!(fl_visual->red_mask & m)) break;
|
||||
fl_redshift = j-8;
|
||||
fl_redmask = (j-i >= 8) ? 0xFF : 0xFF-(255>>(j-i));
|
||||
|
||||
for (i = 0, m = 1; m; i++, m<<=1) if (fl_visual->green_mask & m) break;
|
||||
for (j = i; m; j++, m<<=1) if (!(fl_visual->green_mask & m)) break;
|
||||
fl_greenshift = j-8;
|
||||
fl_greenmask = (j-i >= 8) ? 0xFF : 0xFF-(255>>(j-i));
|
||||
|
||||
for (i = 0, m = 1; m; i++, m<<=1) if (fl_visual->blue_mask & m) break;
|
||||
for (j = i; m; j++, m<<=1) if (!(fl_visual->blue_mask & m)) break;
|
||||
fl_blueshift = j-8;
|
||||
fl_bluemask = (j-i >= 8) ? 0xFF : 0xFF-(255>>(j-i));
|
||||
|
||||
i = fl_redshift;
|
||||
if (fl_greenshift < i) i = fl_greenshift;
|
||||
if (fl_blueshift < i) i = fl_blueshift;
|
||||
if (i < 0) {
|
||||
fl_extrashift = -i;
|
||||
fl_redshift -= i; fl_greenshift -= i; fl_blueshift -= i;
|
||||
} else
|
||||
fl_extrashift = 0;
|
||||
|
||||
}
|
||||
|
||||
static unsigned fl_cmap[256] = {
|
||||
#include "fl_cmap.h" // this is a file produced by "cmap.cxx":
|
||||
};
|
||||
|
||||
# if HAVE_OVERLAY
|
||||
/** HAVE_OVERLAY determines whether fl_xmap is one or two planes */
|
||||
Fl_XColor fl_xmap[2][256];
|
||||
/** HAVE_OVERLAY determines whether fl_overlay is variable or defined as 0 */
|
||||
uchar fl_overlay;
|
||||
Colormap fl_overlay_colormap;
|
||||
XVisualInfo* fl_overlay_visual;
|
||||
ulong fl_transparent_pixel;
|
||||
# else
|
||||
/** HAVE_OVERLAY determines whether fl_xmap is one or two planes */
|
||||
Fl_XColor fl_xmap[1][256];
|
||||
/** HAVE_OVERLAY determines whether fl_overlay is variable or defined as 0 */
|
||||
# define fl_overlay 0
|
||||
# endif
|
||||
|
||||
void Fl_Xlib_Graphics_Driver::color(Fl_Color i) {
|
||||
if (i & 0xffffff00) {
|
||||
unsigned rgb = (unsigned)i;
|
||||
fl_color((uchar)(rgb >> 24), (uchar)(rgb >> 16), (uchar)(rgb >> 8));
|
||||
} else {
|
||||
Fl_Graphics_Driver::color(i);
|
||||
if(!fl_gc) return; // don't get a default gc if current window is not yet created/valid
|
||||
XSetForeground(fl_display, fl_gc, fl_xpixel(i));
|
||||
}
|
||||
}
|
||||
|
||||
void Fl_Xlib_Graphics_Driver::color(uchar r,uchar g,uchar b) {
|
||||
Fl_Graphics_Driver::color( fl_rgb_color(r, g, b) );
|
||||
if(!fl_gc) return; // don't get a default gc if current window is not yet created/valid
|
||||
XSetForeground(fl_display, fl_gc, fl_xpixel(r,g,b));
|
||||
}
|
||||
|
||||
/** \addtogroup fl_attributes
|
||||
@{ */
|
||||
////////////////////////////////////////////////////////////////
|
||||
// Get an rgb color. This is easy for a truecolor visual. For
|
||||
// colormapped it picks the closest color out of the cube in the
|
||||
// fltk colormap. However if this color cube entry has been
|
||||
// requested before, you will get the earlier requested color, and
|
||||
// even this may be approximated if the X colormap was full.
|
||||
|
||||
/**
|
||||
Returns the X pixel number used to draw the given rgb color.
|
||||
This is the X pixel that fl_color() would use.
|
||||
\param[in] r,g,b color components
|
||||
\return X pixel number
|
||||
*/
|
||||
ulong fl_xpixel(uchar r,uchar g,uchar b) {
|
||||
if (!beenhere) figure_out_visual();
|
||||
# if USE_COLORMAP
|
||||
if (!fl_redmask) {
|
||||
// find closest entry in the colormap:
|
||||
Fl_Color i =
|
||||
fl_color_cube(r*FL_NUM_RED/256,g*FL_NUM_GREEN/256,b*FL_NUM_BLUE/256);
|
||||
Fl_XColor &xmap = fl_xmap[fl_overlay][i];
|
||||
if (xmap.mapped) return xmap.pixel;
|
||||
// if not black or white, change the entry to be an exact match:
|
||||
if (i != FL_COLOR_CUBE && i != 0xFF)
|
||||
fl_cmap[i] = (r<<24)|(g<<16)|(b<<8);
|
||||
return fl_xpixel(i); // allocate an X color
|
||||
}
|
||||
# endif
|
||||
return
|
||||
(((r&fl_redmask) << fl_redshift)+
|
||||
((g&fl_greenmask)<<fl_greenshift)+
|
||||
((b&fl_bluemask)<< fl_blueshift)
|
||||
) >> fl_extrashift;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////
|
||||
// Get a color out of the fltk colormap. Again for truecolor
|
||||
// visuals this is easy. For colormap this actually tries to allocate
|
||||
// an X color, and does a least-squares match to find the closest
|
||||
// color if X cannot allocate that color.
|
||||
|
||||
// calculate what color is actually on the screen for a mask:
|
||||
static inline uchar realcolor(uchar color, uchar mask) {
|
||||
# if 0
|
||||
// accurate version if the display has linear gamma, but fl_draw_image
|
||||
// works better with the simpler version on most screens...
|
||||
uchar m = mask;
|
||||
uchar result = color&m;
|
||||
for (;;) {
|
||||
while (m&mask) {m>>=1; color>>=1;}
|
||||
if (!m) break;
|
||||
mask = m;
|
||||
result |= color&m;
|
||||
}
|
||||
return result;
|
||||
# else
|
||||
return (color&mask) | ( (~mask)&(mask>>1) );
|
||||
# endif
|
||||
}
|
||||
|
||||
/**
|
||||
Returns the X pixel number used to draw the given FLTK color index.
|
||||
This is the X pixel that fl_color() would use.
|
||||
\param[in] i color index
|
||||
\return X pixel number
|
||||
*/
|
||||
ulong fl_xpixel(Fl_Color i) {
|
||||
if (i & 0xffffff00) {
|
||||
return fl_xpixel((i >> 24) & 255, (i >> 16) & 255, (i >> 8) & 255);
|
||||
}
|
||||
|
||||
Fl_XColor &xmap = fl_xmap[fl_overlay][i];
|
||||
if (xmap.mapped) return xmap.pixel;
|
||||
|
||||
if (!beenhere) figure_out_visual();
|
||||
|
||||
uchar r,g,b;
|
||||
{unsigned c = fl_cmap[i]; r=uchar(c>>24); g=uchar(c>>16); b=uchar(c>>8);}
|
||||
|
||||
# if USE_COLORMAP
|
||||
Colormap colormap = fl_colormap;
|
||||
# if HAVE_OVERLAY
|
||||
if (fl_overlay) colormap = fl_overlay_colormap; else
|
||||
# endif
|
||||
if (fl_redmask) {
|
||||
# endif
|
||||
// return color for a truecolor visual:
|
||||
xmap.mapped = 2; // 2 prevents XFreeColor from being called
|
||||
xmap.r = realcolor(r, fl_redmask);
|
||||
xmap.g = realcolor(g, fl_greenmask);
|
||||
xmap.b = realcolor(b, fl_bluemask);
|
||||
return xmap.pixel =
|
||||
(((r&fl_redmask) << fl_redshift)+
|
||||
((g&fl_greenmask)<<fl_greenshift)+
|
||||
((b&fl_bluemask)<< fl_blueshift)
|
||||
) >> fl_extrashift;
|
||||
# if USE_COLORMAP
|
||||
}
|
||||
# if HAVE_OVERLAY
|
||||
static XColor* ac[2];
|
||||
XColor*& allcolors = ac[fl_overlay];
|
||||
static int nc[2];
|
||||
int& numcolors = nc[fl_overlay];
|
||||
# else
|
||||
static XColor *allcolors;
|
||||
static int numcolors;
|
||||
# endif
|
||||
|
||||
// I don't try to allocate colors with XAllocColor once it fails
|
||||
// with any color. It is possible that it will work, since a color
|
||||
// may have been freed, but some servers are extremely slow and this
|
||||
// avoids one round trip:
|
||||
if (!numcolors) { // don't try after a failure
|
||||
XColor xcol;
|
||||
xcol.red = r<<8; xcol.green = g<<8; xcol.blue = b<<8;
|
||||
if (XAllocColor(fl_display, colormap, &xcol)) {
|
||||
xmap.mapped = 1;
|
||||
xmap.r = xcol.red>>8;
|
||||
xmap.g = xcol.green>>8;
|
||||
xmap.b = xcol.blue>>8;
|
||||
return xmap.pixel = xcol.pixel;
|
||||
}
|
||||
|
||||
// I only read the colormap once. Again this is due to the slowness
|
||||
// of round-trips to the X server, even though other programs may alter
|
||||
// the colormap after this and make decisions here wrong.
|
||||
# if HAVE_OVERLAY
|
||||
if (fl_overlay) numcolors = fl_overlay_visual->colormap_size; else
|
||||
# endif
|
||||
numcolors = fl_visual->colormap_size;
|
||||
if (!allcolors) allcolors = new XColor[numcolors];
|
||||
for (int p = numcolors; p--;) allcolors[p].pixel = p;
|
||||
XQueryColors(fl_display, colormap, allcolors, numcolors);
|
||||
}
|
||||
|
||||
// find least-squares match:
|
||||
int mindist = 0x7FFFFFFF;
|
||||
unsigned int bestmatch = 0;
|
||||
for (unsigned int n = numcolors; n--;) {
|
||||
# if HAVE_OVERLAY
|
||||
if (fl_overlay && n == fl_transparent_pixel) continue;
|
||||
# endif
|
||||
XColor &a = allcolors[n];
|
||||
int d, t;
|
||||
t = int(r)-int(a.red>>8); d = t*t;
|
||||
t = int(g)-int(a.green>>8); d += t*t;
|
||||
t = int(b)-int(a.blue>>8); d += t*t;
|
||||
if (d <= mindist) {bestmatch = n; mindist = d;}
|
||||
}
|
||||
XColor &p = allcolors[bestmatch];
|
||||
|
||||
// It appears to "work" to not call this XAllocColor, which will
|
||||
// avoid another round-trip to the server. But then X does not
|
||||
// know that this program "owns" this value, and can (and will)
|
||||
// change it when the program that did allocate it exits:
|
||||
if (XAllocColor(fl_display, colormap, &p)) {
|
||||
xmap.mapped = 1;
|
||||
xmap.pixel = p.pixel;
|
||||
} else {
|
||||
// However, if that XAllocColor fails, I have to give up and
|
||||
// assume the pixel is ok for the duration of the program. This
|
||||
// is due to bugs (?) in the Solaris X and some X terminals
|
||||
// where XAllocColor *always* fails when the colormap is full,
|
||||
// even if we ask for a color already in it...
|
||||
xmap.mapped = 2; // 2 prevents XFreeColor from being called
|
||||
xmap.pixel = bestmatch;
|
||||
}
|
||||
xmap.r = p.red>>8;
|
||||
xmap.g = p.green>>8;
|
||||
xmap.b = p.blue>>8;
|
||||
return xmap.pixel;
|
||||
# endif
|
||||
}
|
||||
|
||||
/**
|
||||
Free color \p i if used, and clear mapping table entry.
|
||||
\param[in] i color index
|
||||
\param[in] overlay 0 for normal, 1 for overlay color
|
||||
*/
|
||||
void Fl::free_color(Fl_Color i, int overlay) {
|
||||
# if HAVE_OVERLAY
|
||||
# else
|
||||
if (overlay) return;
|
||||
# endif
|
||||
if (fl_xmap[overlay][i].mapped) {
|
||||
# if USE_COLORMAP
|
||||
# if HAVE_OVERLAY
|
||||
Colormap colormap = overlay ? fl_overlay_colormap : fl_colormap;
|
||||
# else
|
||||
Colormap colormap = fl_colormap;
|
||||
# endif
|
||||
if (fl_xmap[overlay][i].mapped == 1)
|
||||
XFreeColors(fl_display, colormap, &(fl_xmap[overlay][i].pixel), 1, 0);
|
||||
# endif
|
||||
fl_xmap[overlay][i].mapped = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
Set color mapping table entry \p i to color \p c
|
||||
\param[in] i color index
|
||||
\param[in] c color
|
||||
*/
|
||||
void Fl::set_color(Fl_Color i, unsigned c) {
|
||||
if (fl_cmap[i] != c) {
|
||||
free_color(i,0);
|
||||
# if HAVE_OVERLAY
|
||||
free_color(i,1);
|
||||
# endif
|
||||
fl_cmap[i] = c;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
@}
|
||||
*/
|
||||
|
||||
//
|
||||
// End of "$Id$".
|
||||
//
|
||||
+27
-315
@@ -23,334 +23,45 @@
|
||||
|
||||
// Implementation of fl_color(i), fl_color(r,g,b).
|
||||
|
||||
#ifdef WIN32
|
||||
# include "fl_color_win32.cxx"
|
||||
#elif defined(__APPLE__)
|
||||
# include "fl_color_mac.cxx"
|
||||
#elif defined(FL_PORTING)
|
||||
# pragma message "FL_PORTING: implement color handling in your own file based on fl_color.cxx"
|
||||
# include "fl_color_porting.cxx"
|
||||
#else
|
||||
#include <config.h>
|
||||
#include "config_lib.h"
|
||||
|
||||
// Also code to look at the X visual and figure out the best way to turn
|
||||
// a color into a pixel value.
|
||||
|
||||
// SGI compiler seems to have problems with unsigned char arguments
|
||||
// being used to index arrays. So I always copy them to an integer
|
||||
// before use.
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
# include "Fl_XColor.H"
|
||||
# include <FL/Fl.H>
|
||||
# include <FL/x.H>
|
||||
# include <FL/fl_draw.H>
|
||||
|
||||
////////////////////////////////////////////////////////////////
|
||||
// figure_out_visual() calculates masks & shifts for generating
|
||||
// pixels in true-color visuals:
|
||||
#ifdef FL_CFG_GFX_QUARTZ
|
||||
|
||||
uchar fl_redmask; /**< color mask used in current color map handling */
|
||||
uchar fl_greenmask; /**< color mask used in current color map handling */
|
||||
uchar fl_bluemask; /**< color mask used in current color map handling */
|
||||
# include "cfg_gfx/quartz_color.cxx"
|
||||
|
||||
int fl_redshift; /**< color shift used in current color map handling */
|
||||
int fl_greenshift; /**< color shift used in current color map handling */
|
||||
int fl_blueshift; /**< color shift used in current color map handling */
|
||||
int fl_extrashift; /**< color shift used in current color map handling */
|
||||
|
||||
static uchar beenhere;
|
||||
|
||||
static void figure_out_visual() {
|
||||
beenhere = 1;
|
||||
if (!fl_visual->red_mask || !fl_visual->green_mask || !fl_visual->blue_mask){
|
||||
# if USE_COLORMAP
|
||||
fl_redmask = 0;
|
||||
return;
|
||||
# else
|
||||
Fl::fatal("Requires true color visual");
|
||||
# endif
|
||||
}
|
||||
|
||||
// get the bit masks into a more useful form:
|
||||
int i,j,m;
|
||||
|
||||
for (i = 0, m = 1; m; i++, m<<=1) if (fl_visual->red_mask & m) break;
|
||||
for (j = i; m; j++, m<<=1) if (!(fl_visual->red_mask & m)) break;
|
||||
fl_redshift = j-8;
|
||||
fl_redmask = (j-i >= 8) ? 0xFF : 0xFF-(255>>(j-i));
|
||||
|
||||
for (i = 0, m = 1; m; i++, m<<=1) if (fl_visual->green_mask & m) break;
|
||||
for (j = i; m; j++, m<<=1) if (!(fl_visual->green_mask & m)) break;
|
||||
fl_greenshift = j-8;
|
||||
fl_greenmask = (j-i >= 8) ? 0xFF : 0xFF-(255>>(j-i));
|
||||
|
||||
for (i = 0, m = 1; m; i++, m<<=1) if (fl_visual->blue_mask & m) break;
|
||||
for (j = i; m; j++, m<<=1) if (!(fl_visual->blue_mask & m)) break;
|
||||
fl_blueshift = j-8;
|
||||
fl_bluemask = (j-i >= 8) ? 0xFF : 0xFF-(255>>(j-i));
|
||||
|
||||
i = fl_redshift;
|
||||
if (fl_greenshift < i) i = fl_greenshift;
|
||||
if (fl_blueshift < i) i = fl_blueshift;
|
||||
if (i < 0) {
|
||||
fl_extrashift = -i;
|
||||
fl_redshift -= i; fl_greenshift -= i; fl_blueshift -= i;
|
||||
} else
|
||||
fl_extrashift = 0;
|
||||
|
||||
}
|
||||
|
||||
static unsigned fl_cmap[256] = {
|
||||
#include "fl_cmap.h" // this is a file produced by "cmap.cxx":
|
||||
};
|
||||
|
||||
# if HAVE_OVERLAY
|
||||
/** HAVE_OVERLAY determines whether fl_xmap is one or two planes */
|
||||
Fl_XColor fl_xmap[2][256];
|
||||
/** HAVE_OVERLAY determines whether fl_overlay is variable or defined as 0 */
|
||||
uchar fl_overlay;
|
||||
Colormap fl_overlay_colormap;
|
||||
XVisualInfo* fl_overlay_visual;
|
||||
ulong fl_transparent_pixel;
|
||||
# else
|
||||
/** HAVE_OVERLAY determines whether fl_xmap is one or two planes */
|
||||
Fl_XColor fl_xmap[1][256];
|
||||
/** HAVE_OVERLAY determines whether fl_overlay is variable or defined as 0 */
|
||||
# define fl_overlay 0
|
||||
#endif
|
||||
|
||||
void Fl_Xlib_Graphics_Driver::color(Fl_Color i) {
|
||||
if (i & 0xffffff00) {
|
||||
unsigned rgb = (unsigned)i;
|
||||
fl_color((uchar)(rgb >> 24), (uchar)(rgb >> 16), (uchar)(rgb >> 8));
|
||||
} else {
|
||||
Fl_Graphics_Driver::color(i);
|
||||
if(!fl_gc) return; // don't get a default gc if current window is not yet created/valid
|
||||
XSetForeground(fl_display, fl_gc, fl_xpixel(i));
|
||||
}
|
||||
}
|
||||
|
||||
void Fl_Xlib_Graphics_Driver::color(uchar r,uchar g,uchar b) {
|
||||
Fl_Graphics_Driver::color( fl_rgb_color(r, g, b) );
|
||||
if(!fl_gc) return; // don't get a default gc if current window is not yet created/valid
|
||||
XSetForeground(fl_display, fl_gc, fl_xpixel(r,g,b));
|
||||
}
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
|
||||
#ifdef FL_CFG_GFX_GDI
|
||||
|
||||
# include "cfg_gfx/gdi_color.cxx"
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
|
||||
#ifdef FL_CFG_GFX_XLIB
|
||||
|
||||
# include "cfg_gfx/xlib_color.cxx"
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
/** \addtogroup fl_attributes
|
||||
@{ */
|
||||
////////////////////////////////////////////////////////////////
|
||||
// Get an rgb color. This is easy for a truecolor visual. For
|
||||
// colormapped it picks the closest color out of the cube in the
|
||||
// fltk colormap. However if this color cube entry has been
|
||||
// requested before, you will get the earlier requested color, and
|
||||
// even this may be approximated if the X colormap was full.
|
||||
|
||||
/**
|
||||
Returns the X pixel number used to draw the given rgb color.
|
||||
This is the X pixel that fl_color() would use.
|
||||
\param[in] r,g,b color components
|
||||
\return X pixel number
|
||||
*/
|
||||
ulong fl_xpixel(uchar r,uchar g,uchar b) {
|
||||
if (!beenhere) figure_out_visual();
|
||||
# if USE_COLORMAP
|
||||
if (!fl_redmask) {
|
||||
// find closest entry in the colormap:
|
||||
Fl_Color i =
|
||||
fl_color_cube(r*FL_NUM_RED/256,g*FL_NUM_GREEN/256,b*FL_NUM_BLUE/256);
|
||||
Fl_XColor &xmap = fl_xmap[fl_overlay][i];
|
||||
if (xmap.mapped) return xmap.pixel;
|
||||
// if not black or white, change the entry to be an exact match:
|
||||
if (i != FL_COLOR_CUBE && i != 0xFF)
|
||||
fl_cmap[i] = (r<<24)|(g<<16)|(b<<8);
|
||||
return fl_xpixel(i); // allocate an X color
|
||||
}
|
||||
# endif
|
||||
return
|
||||
(((r&fl_redmask) << fl_redshift)+
|
||||
((g&fl_greenmask)<<fl_greenshift)+
|
||||
((b&fl_bluemask)<< fl_blueshift)
|
||||
) >> fl_extrashift;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////
|
||||
// Get a color out of the fltk colormap. Again for truecolor
|
||||
// visuals this is easy. For colormap this actually tries to allocate
|
||||
// an X color, and does a least-squares match to find the closest
|
||||
// color if X cannot allocate that color.
|
||||
|
||||
// calculate what color is actually on the screen for a mask:
|
||||
static inline uchar realcolor(uchar color, uchar mask) {
|
||||
# if 0
|
||||
// accurate version if the display has linear gamma, but fl_draw_image
|
||||
// works better with the simpler version on most screens...
|
||||
uchar m = mask;
|
||||
uchar result = color&m;
|
||||
for (;;) {
|
||||
while (m&mask) {m>>=1; color>>=1;}
|
||||
if (!m) break;
|
||||
mask = m;
|
||||
result |= color&m;
|
||||
}
|
||||
return result;
|
||||
# else
|
||||
return (color&mask) | ( (~mask)&(mask>>1) );
|
||||
# endif
|
||||
}
|
||||
|
||||
/**
|
||||
Returns the X pixel number used to draw the given FLTK color index.
|
||||
This is the X pixel that fl_color() would use.
|
||||
\param[in] i color index
|
||||
\return X pixel number
|
||||
*/
|
||||
ulong fl_xpixel(Fl_Color i) {
|
||||
if (i & 0xffffff00) {
|
||||
return fl_xpixel((i >> 24) & 255, (i >> 16) & 255, (i >> 8) & 255);
|
||||
}
|
||||
|
||||
Fl_XColor &xmap = fl_xmap[fl_overlay][i];
|
||||
if (xmap.mapped) return xmap.pixel;
|
||||
|
||||
if (!beenhere) figure_out_visual();
|
||||
|
||||
uchar r,g,b;
|
||||
{unsigned c = fl_cmap[i]; r=uchar(c>>24); g=uchar(c>>16); b=uchar(c>>8);}
|
||||
|
||||
# if USE_COLORMAP
|
||||
Colormap colormap = fl_colormap;
|
||||
# if HAVE_OVERLAY
|
||||
if (fl_overlay) colormap = fl_overlay_colormap; else
|
||||
# endif
|
||||
if (fl_redmask) {
|
||||
# endif
|
||||
// return color for a truecolor visual:
|
||||
xmap.mapped = 2; // 2 prevents XFreeColor from being called
|
||||
xmap.r = realcolor(r, fl_redmask);
|
||||
xmap.g = realcolor(g, fl_greenmask);
|
||||
xmap.b = realcolor(b, fl_bluemask);
|
||||
return xmap.pixel =
|
||||
(((r&fl_redmask) << fl_redshift)+
|
||||
((g&fl_greenmask)<<fl_greenshift)+
|
||||
((b&fl_bluemask)<< fl_blueshift)
|
||||
) >> fl_extrashift;
|
||||
# if USE_COLORMAP
|
||||
}
|
||||
# if HAVE_OVERLAY
|
||||
static XColor* ac[2];
|
||||
XColor*& allcolors = ac[fl_overlay];
|
||||
static int nc[2];
|
||||
int& numcolors = nc[fl_overlay];
|
||||
# else
|
||||
static XColor *allcolors;
|
||||
static int numcolors;
|
||||
# endif
|
||||
|
||||
// I don't try to allocate colors with XAllocColor once it fails
|
||||
// with any color. It is possible that it will work, since a color
|
||||
// may have been freed, but some servers are extremely slow and this
|
||||
// avoids one round trip:
|
||||
if (!numcolors) { // don't try after a failure
|
||||
XColor xcol;
|
||||
xcol.red = r<<8; xcol.green = g<<8; xcol.blue = b<<8;
|
||||
if (XAllocColor(fl_display, colormap, &xcol)) {
|
||||
xmap.mapped = 1;
|
||||
xmap.r = xcol.red>>8;
|
||||
xmap.g = xcol.green>>8;
|
||||
xmap.b = xcol.blue>>8;
|
||||
return xmap.pixel = xcol.pixel;
|
||||
}
|
||||
|
||||
// I only read the colormap once. Again this is due to the slowness
|
||||
// of round-trips to the X server, even though other programs may alter
|
||||
// the colormap after this and make decisions here wrong.
|
||||
# if HAVE_OVERLAY
|
||||
if (fl_overlay) numcolors = fl_overlay_visual->colormap_size; else
|
||||
# endif
|
||||
numcolors = fl_visual->colormap_size;
|
||||
if (!allcolors) allcolors = new XColor[numcolors];
|
||||
for (int p = numcolors; p--;) allcolors[p].pixel = p;
|
||||
XQueryColors(fl_display, colormap, allcolors, numcolors);
|
||||
}
|
||||
|
||||
// find least-squares match:
|
||||
int mindist = 0x7FFFFFFF;
|
||||
unsigned int bestmatch = 0;
|
||||
for (unsigned int n = numcolors; n--;) {
|
||||
# if HAVE_OVERLAY
|
||||
if (fl_overlay && n == fl_transparent_pixel) continue;
|
||||
# endif
|
||||
XColor &a = allcolors[n];
|
||||
int d, t;
|
||||
t = int(r)-int(a.red>>8); d = t*t;
|
||||
t = int(g)-int(a.green>>8); d += t*t;
|
||||
t = int(b)-int(a.blue>>8); d += t*t;
|
||||
if (d <= mindist) {bestmatch = n; mindist = d;}
|
||||
}
|
||||
XColor &p = allcolors[bestmatch];
|
||||
|
||||
// It appears to "work" to not call this XAllocColor, which will
|
||||
// avoid another round-trip to the server. But then X does not
|
||||
// know that this program "owns" this value, and can (and will)
|
||||
// change it when the program that did allocate it exits:
|
||||
if (XAllocColor(fl_display, colormap, &p)) {
|
||||
xmap.mapped = 1;
|
||||
xmap.pixel = p.pixel;
|
||||
} else {
|
||||
// However, if that XAllocColor fails, I have to give up and
|
||||
// assume the pixel is ok for the duration of the program. This
|
||||
// is due to bugs (?) in the Solaris X and some X terminals
|
||||
// where XAllocColor *always* fails when the colormap is full,
|
||||
// even if we ask for a color already in it...
|
||||
xmap.mapped = 2; // 2 prevents XFreeColor from being called
|
||||
xmap.pixel = bestmatch;
|
||||
}
|
||||
xmap.r = p.red>>8;
|
||||
xmap.g = p.green>>8;
|
||||
xmap.b = p.blue>>8;
|
||||
return xmap.pixel;
|
||||
# endif
|
||||
}
|
||||
|
||||
/**
|
||||
Free color \p i if used, and clear mapping table entry.
|
||||
\param[in] i color index
|
||||
\param[in] overlay 0 for normal, 1 for overlay color
|
||||
*/
|
||||
void Fl::free_color(Fl_Color i, int overlay) {
|
||||
# if HAVE_OVERLAY
|
||||
# else
|
||||
if (overlay) return;
|
||||
# endif
|
||||
if (fl_xmap[overlay][i].mapped) {
|
||||
# if USE_COLORMAP
|
||||
# if HAVE_OVERLAY
|
||||
Colormap colormap = overlay ? fl_overlay_colormap : fl_colormap;
|
||||
# else
|
||||
Colormap colormap = fl_colormap;
|
||||
# endif
|
||||
if (fl_xmap[overlay][i].mapped == 1)
|
||||
XFreeColors(fl_display, colormap, &(fl_xmap[overlay][i].pixel), 1, 0);
|
||||
# endif
|
||||
fl_xmap[overlay][i].mapped = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
Set color mapping table entry \p i to color \p c
|
||||
\param[in] i color index
|
||||
\param[in] c color
|
||||
*/
|
||||
void Fl::set_color(Fl_Color i, unsigned c) {
|
||||
if (fl_cmap[i] != c) {
|
||||
free_color(i,0);
|
||||
# if HAVE_OVERLAY
|
||||
free_color(i,1);
|
||||
# endif
|
||||
fl_cmap[i] = c;
|
||||
}
|
||||
}
|
||||
|
||||
#endif // end of X-specific code
|
||||
/**
|
||||
Returns the RGB value(s) for the given FLTK color index.
|
||||
|
||||
@@ -460,6 +171,7 @@ Fl_Color fl_contrast(Fl_Color fg, Fl_Color bg) {
|
||||
/**
|
||||
@}
|
||||
*/
|
||||
|
||||
//
|
||||
// End of "$Id$".
|
||||
//
|
||||
|
||||
@@ -1,50 +0,0 @@
|
||||
//
|
||||
// "$Id$"
|
||||
//
|
||||
// MacOS color functions for the Fast Light Tool Kit (FLTK).
|
||||
//
|
||||
// Copyright 1998-2010 by Bill Spitzak and others.
|
||||
//
|
||||
// This library is free software. Distribution and use rights are outlined in
|
||||
// the file "COPYING" which should have been included with this file. If this
|
||||
// file is missing or damaged, see the license at:
|
||||
//
|
||||
// http://www.fltk.org/COPYING.php
|
||||
//
|
||||
// Please report all bugs and problems on the following page:
|
||||
//
|
||||
// http://www.fltk.org/str.php
|
||||
//
|
||||
|
||||
// The fltk "colormap". This allows ui colors to be stored in 8-bit
|
||||
// locations, and provides a level of indirection so that global color
|
||||
// changes can be made. Not to be confused with the X colormap, which
|
||||
// I try to hide completely.
|
||||
|
||||
// matt: Neither Quartz nor Quickdraw support colormaps in this implementation
|
||||
// matt: Quartz support done
|
||||
|
||||
#include <config.h>
|
||||
#include <FL/Fl.H>
|
||||
#include <FL/x.H>
|
||||
#include <FL/fl_draw.H>
|
||||
|
||||
static unsigned fl_cmap[256] = {
|
||||
#include "fl_cmap.h" // this is a file produced by "cmap.cxx":
|
||||
};
|
||||
|
||||
//void Fl_XXX_Graphics_Driver::color(Fl_Color i) {
|
||||
//}
|
||||
|
||||
//void Fl_XXX_Graphics_Driver::color(uchar r, uchar g, uchar b) {
|
||||
//}
|
||||
|
||||
void Fl::set_color(Fl_Color i, unsigned c) {
|
||||
if (fl_cmap[i] != c) {
|
||||
fl_cmap[i] = c;
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// End of "$Id$".
|
||||
//
|
||||
Reference in New Issue
Block a user