FLTK 1.3.4

Fl_Device.H
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1 //
2 // "$Id: Fl_Device.H 12030 2016-10-16 15:00:02Z manolo $"
3 //
4 // Definition of classes Fl_Device, Fl_Graphics_Driver, Fl_Surface_Device, Fl_Display_Device
5 // for the Fast Light Tool Kit (FLTK).
6 //
7 // Copyright 2010-2014 by Bill Spitzak and others.
8 //
9 // This library is free software. Distribution and use rights are outlined in
10 // the file "COPYING" which should have been included with this file. If this
11 // file is missing or damaged, see the license at:
12 //
13 // http://www.fltk.org/COPYING.php
14 //
15 // Please report all bugs and problems on the following page:
16 //
17 // http://www.fltk.org/str.php
18 //
19
25 #ifndef Fl_Device_H
26 #define Fl_Device_H
27
28 #include <FL/x.H>
29 #include <FL/Fl_Plugin.H>
30 #include <FL/Fl_Image.H>
31 #include <FL/Fl_Bitmap.H>
32 #include <FL/Fl_Pixmap.H>
33 #include <FL/Fl_RGB_Image.H>
34 #include <stdlib.h>
35
36 class Fl_Graphics_Driver;
37 class Fl_Font_Descriptor;
39 FL_EXPORT extern Fl_Graphics_Driver *fl_graphics_driver;
40
49 typedef void (*Fl_Draw_Image_Cb)(void* data,int x,int y,int w,uchar* buf);
50
51 // typedef what the x,y fields in a point are:
52 #ifdef WIN32
53 typedef int COORD_T;
54 # define XPOINT XPoint
55 #elif defined(__APPLE__)
56 typedef float COORD_T;
57 typedef struct { float x; float y; } QPoint;
58 # define XPOINT QPoint
59 extern float fl_quartz_line_width_;
60 #else
61 typedef short COORD_T;
62 # define XPOINT XPoint
63 #endif
64
69 class FL_EXPORT Fl_Device {
70 public:
74 static const char *class_id;
84 virtual const char *class_name() {return class_id;};
91 virtual ~Fl_Device() {};
92 };
93
94 #define FL_REGION_STACK_SIZE 10
95 #define FL_MATRIX_STACK_SIZE 32
96
110 class FL_EXPORT Fl_Graphics_Driver : public Fl_Device {
111 public:
114 struct matrix {double a, b, c, d, x, y;};
115 private:
116 static const matrix m0;
117 Fl_Font font_; // current font
118 Fl_Fontsize size_; // current font size
119 Fl_Color color_; // current color
120 int sptr;
121 static const int matrix_stack_size = FL_MATRIX_STACK_SIZE;
122 matrix stack[FL_MATRIX_STACK_SIZE];
123 matrix m;
124 int n, p_size, gap_;
125 XPOINT *p;
126 int what;
127 int fl_clip_state_number;
128 int rstackptr;
129 static const int region_stack_max = FL_REGION_STACK_SIZE - 1;
130 Fl_Region rstack[FL_REGION_STACK_SIZE];
131 #ifdef WIN32
132 int numcount;
133 int counts[20];
134 #endif
135 Fl_Font_Descriptor *font_descriptor_;
136 void transformed_vertex0(COORD_T x, COORD_T y);
137 void fixloop();
138
139 protected:
140 #ifndef FL_DOXYGEN
141 enum {LINE, LOOP, POLYGON, POINT_};
142 inline int vertex_no() { return n; }
143 inline XPOINT *vertices() {return p;}
144 inline int vertex_kind() {return what;}
145 #endif
146 /* ** \brief red color for background and/or mixing if device does not support masking or alpha *
147 uchar bg_r_;
148 ** \brief green color for background and/or mixing if device does not support masking or alpha *
149 uchar bg_g_;
150 ** \brief blue color for background and/or mixing if device does not support masking or alpha *
151 uchar bg_b_; */
152 friend class Fl_Pixmap;
153 friend class Fl_Bitmap;
154 friend class Fl_RGB_Image;
155 friend void fl_rect(int x, int y, int w, int h);
156 friend void fl_rectf(int x, int y, int w, int h);
157 friend void fl_line_style(int style, int width, char* dashes);
158 friend void fl_xyline(int x, int y, int x1);
159 friend void fl_xyline(int x, int y, int x1, int y2);
160 friend void fl_xyline(int x, int y, int x1, int y2, int x3);
161 friend void fl_yxline(int x, int y, int y1);
162 friend void fl_yxline(int x, int y, int y1, int x2);
163 friend void fl_yxline(int x, int y, int y1, int x2, int y3);
164 friend void fl_line(int x, int y, int x1, int y1);
165 friend void fl_line(int x, int y, int x1, int y1, int x2, int y2);
166 friend void fl_draw(const char *str, int n, int x, int y);
167 #ifdef __APPLE__
168 friend void fl_draw(const char *str, int n, float x, float y);
169 #endif
170 friend void fl_draw(int angle, const char *str, int n, int x, int y);
171 friend void fl_rtl_draw(const char *str, int n, int x, int y);
172 friend void fl_font(Fl_Font face, Fl_Fontsize size);
173 friend void fl_color(Fl_Color c);
174 friend void fl_color(uchar r, uchar g, uchar b);
175 friend void fl_point(int x, int y);
176 friend void fl_loop(int x0, int y0, int x1, int y1, int x2, int y2);
177 friend void fl_loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
178 friend void fl_polygon(int x0, int y0, int x1, int y1, int x2, int y2);
179 friend void fl_polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
180 friend void fl_begin_points();
181 friend void fl_begin_line();
182 friend void fl_begin_loop();
183 friend void fl_begin_polygon();
184 friend void fl_vertex(double x, double y);
185 friend void fl_curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3);
186 friend void fl_circle(double x, double y, double r);
187 friend void fl_arc(double x, double y, double r, double start, double end);
188 friend void fl_arc(int x, int y, int w, int h, double a1, double a2);
189 friend void fl_pie(int x, int y, int w, int h, double a1, double a2);
190 friend void fl_end_points();
191 friend void fl_end_line();
192 friend void fl_end_loop();
193 friend void fl_end_polygon();
194 friend void fl_transformed_vertex(double xf, double yf);
195 friend void fl_push_clip(int x, int y, int w, int h);
196 friend int fl_clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H);
197 friend int fl_not_clipped(int x, int y, int w, int h);
198 friend void fl_push_no_clip();
199 friend void fl_pop_clip();
200 friend void fl_begin_complex_polygon();
201 friend void fl_gap();
202 friend void fl_end_complex_polygon();
203 friend void fl_push_matrix();
204 friend void fl_pop_matrix();
205 friend void fl_mult_matrix(double a, double b, double c, double d, double x, double y);
206 friend void fl_scale(double x, double y);
207 friend void fl_scale(double x);
208 friend void fl_translate(double x, double y);
209 friend void fl_rotate(double d);
210 friend double fl_transform_x(double x, double y);
211 friend double fl_transform_y(double x, double y);
212 friend double fl_transform_dx(double x, double y);
213 friend double fl_transform_dy(double x, double y);
214 friend Fl_Region fl_clip_region();
215 friend void fl_clip_region(Fl_Region r);
216 friend void fl_restore_clip();
217
218 friend void fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D, int L);
219 friend void fl_draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D, int L);
220 friend void fl_draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D);
221 friend FL_EXPORT void fl_draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D);
222 friend FL_EXPORT void gl_start();
223 friend FL_EXPORT void fl_copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy);
224 matrix *fl_matrix;
227 Fl_Graphics_Driver();
229 virtual void rect(int x, int y, int w, int h);
231 virtual void rectf(int x, int y, int w, int h);
233 virtual void line_style(int style, int width=0, char* dashes=0);
235 virtual void xyline(int x, int y, int x1);
237 virtual void xyline(int x, int y, int x1, int y2);
239 virtual void xyline(int x, int y, int x1, int y2, int x3);
241 virtual void yxline(int x, int y, int y1);
243 virtual void yxline(int x, int y, int y1, int x2);
245 virtual void yxline(int x, int y, int y1, int x2, int y3);
247 virtual void line(int x, int y, int x1, int y1);
249 virtual void line(int x, int y, int x1, int y1, int x2, int y2);
251 virtual void draw(const char *str, int n, int x, int y) {}
252 #ifdef __APPLE__
253 virtual void draw(const char *str, int n, float x, float y) { draw(str, n, (int)(x+0.5), (int)(y+0.5));}
254 #endif
255
256 virtual void draw(int angle, const char *str, int n, int x, int y) {}
258 virtual void rtl_draw(const char *str, int n, int x, int y) {};
260 virtual void color(Fl_Color c) {color_ = c;}
262 virtual void color(uchar r, uchar g, uchar b) {}
264 virtual void point(int x, int y);
266 virtual void loop(int x0, int y0, int x1, int y1, int x2, int y2);
268 virtual void loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
270 virtual void polygon(int x0, int y0, int x1, int y1, int x2, int y2);
272 virtual void polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3);
274 virtual void begin_points();
276 virtual void begin_line();
278 virtual void begin_loop();
280 virtual void begin_polygon();
282 virtual void vertex(double x, double y);
284 virtual void curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3);
286 virtual void circle(double x, double y, double r);
288 virtual void arc(double x, double y, double r, double start, double end);
290 virtual void arc(int x, int y, int w, int h, double a1, double a2);
292 virtual void pie(int x, int y, int w, int h, double a1, double a2);
294 virtual void end_points();
296 virtual void end_line();
298 virtual void end_loop();
300 virtual void end_polygon();
302 virtual void begin_complex_polygon();
304 virtual void gap();
306 virtual void end_complex_polygon();
308 virtual void transformed_vertex(double xf, double yf);
310 virtual void push_clip(int x, int y, int w, int h);
312 virtual int clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H);
314 virtual int not_clipped(int x, int y, int w, int h);
316 virtual void push_no_clip();
318 virtual void pop_clip();
319
321 void push_matrix();
323 void pop_matrix();
325 void mult_matrix(double a, double b, double c, double d, double x, double y);
327 inline void scale(double x, double y) { mult_matrix(x,0,0,y,0,0); }
329 inline void scale(double x) { mult_matrix(x,0,0,x,0,0); }
331 inline void translate(double x,double y) { mult_matrix(1,0,0,1,x,y); }
333 void rotate(double d);
335 double transform_x(double x, double y);
337 double transform_y(double x, double y);
339 double transform_dx(double x, double y);
341 double transform_dy(double x, double y);
343 Fl_Region clip_region();
345 void clip_region(Fl_Region r);
347 void restore_clip();
348
349 // Images
351 virtual void draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0) {}
353 virtual void draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0) {}
355 virtual void draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3) {}
357 virtual void draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1) {}
358 // Image classes
364 virtual void draw(Fl_RGB_Image * rgb,int XP, int YP, int WP, int HP, int cx, int cy) {}
370 virtual void draw(Fl_Pixmap * pxm,int XP, int YP, int WP, int HP, int cx, int cy) {}
376 virtual void draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) {}
377 #if FLTK_ABI_VERSION >= 10301
378 virtual
379 #endif
380 void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy);
381
382 public:
383 static const char *class_id;
384 virtual const char *class_name() {return class_id;};
386 virtual void font(Fl_Font face, Fl_Fontsize fsize) {font_ = face; size_ = fsize;}
388 Fl_Font font() {return font_; }
390 Fl_Fontsize size() {return size_; }
392 virtual double width(const char *str, int n) {return 0;}
394 virtual inline double width(unsigned int c) { char ch = (char)c; return width(&ch, 1); }
396 virtual void text_extents(const char*, int n, int& dx, int& dy, int& w, int& h);
398 virtual int height() {return size();}
400 virtual int descent() {return 0;}
402 Fl_Color color() {return color_;}
404 inline Fl_Font_Descriptor *font_descriptor() { return font_descriptor_;}
406 inline void font_descriptor(Fl_Font_Descriptor *d) { font_descriptor_ = d;}
407 #if FLTK_ABI_VERSION >= 10304 || defined(FL_DOXYGEN)
408 virtual
409 #endif
410 int draw_scaled(Fl_Image *img, int X, int Y, int W, int H);
412 virtual ~Fl_Graphics_Driver() { if (p) free(p); }
413 };
414
415 #if defined(__APPLE__) || defined(FL_DOXYGEN)
416
421 class FL_EXPORT Fl_Quartz_Graphics_Driver : public Fl_Graphics_Driver {
422 public:
423 static const char *class_id;
424 const char *class_name() {return class_id;};
425 void color(Fl_Color c);
426 void color(uchar r, uchar g, uchar b);
427 void draw(const char* str, int n, int x, int y);
428 #ifdef __APPLE__
429 void draw(const char *str, int n, float x, float y);
430 #endif
431 void draw(int angle, const char *str, int n, int x, int y);
432 void rtl_draw(const char* str, int n, int x, int y);
433 void font(Fl_Font face, Fl_Fontsize size);
434 void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
435 void draw(Fl_Bitmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
436 void draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy);
437 int draw_scaled(Fl_Image *img, int XP, int YP, int WP, int HP);
438 void draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0);
439 void draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3);
440 void draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0);
441 void draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1);
442 double width(const char *str, int n);
443 double width(unsigned int c);
444 void text_extents(const char*, int n, int& dx, int& dy, int& w, int& h);
445 int height();
446 int descent();
447 #if ! defined(FL_DOXYGEN)
448 static Fl_Offscreen create_offscreen_with_alpha(int w, int h);
449 #endif
450 void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy);
451 };
452 #endif
453 #if defined(WIN32) || defined(FL_DOXYGEN)
454
459 class FL_EXPORT Fl_GDI_Graphics_Driver : public Fl_Graphics_Driver {
460 public:
461 static const char *class_id;
462 const char *class_name() {return class_id;};
463 void color(Fl_Color c);
464 void color(uchar r, uchar g, uchar b);
465 void draw(const char* str, int n, int x, int y);
466 void draw(int angle, const char *str, int n, int x, int y);
467 void rtl_draw(const char* str, int n, int x, int y);
468 void font(Fl_Font face, Fl_Fontsize size);
469 void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
470 void draw(Fl_Bitmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
471 void draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy);
472 void draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0);
473 void draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3);
474 void draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0);
475 void draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1);
476 double width(const char *str, int n);
477 double width(unsigned int c);
478 void text_extents(const char*, int n, int& dx, int& dy, int& w, int& h);
479 int height();
480 int descent();
481 #if ! defined(FL_DOXYGEN)
482 void copy_offscreen_with_alpha(int x,int y,int w,int h,HBITMAP bitmap,int srcx,int srcy);
483 #endif
484 void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy);
485 };
486
492 class FL_EXPORT Fl_GDI_Printer_Graphics_Driver : public Fl_GDI_Graphics_Driver {
493 public:
494 static const char *class_id;
495 const char *class_name() {return class_id;};
496 void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
497 void draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy);
498 int draw_scaled(Fl_Image *img, int XP, int YP, int WP, int HP);
499 };
500 #endif
501 #if !(defined(__APPLE__) || defined(WIN32))
502
507 class FL_EXPORT Fl_Xlib_Graphics_Driver : public Fl_Graphics_Driver {
508 public:
509 static const char *class_id;
510 const char *class_name() {return class_id;};
511 void color(Fl_Color c);
512 void color(uchar r, uchar g, uchar b);
513 void draw(const char* str, int n, int x, int y);
514 void draw(int angle, const char *str, int n, int x, int y);
515 void rtl_draw(const char* str, int n, int x, int y);
516 void font(Fl_Font face, Fl_Fontsize size);
517 void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
518 void draw(Fl_Bitmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
519 void draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy);
520 void draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0);
521 void draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3);
522 void draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0);
523 void draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1);
524 double width(const char *str, int n);
525 double width(unsigned int c);
526 void text_extents(const char*, int n, int& dx, int& dy, int& w, int& h);
527 int height();
528 int descent();
529 void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy);
530 #if ! defined(FL_DOXYGEN)
531 void copy_offscreen_with_alpha(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy);
532 #endif
533 };
534 #endif
535
556 class FL_EXPORT Fl_Surface_Device : public Fl_Device {
558 Fl_Graphics_Driver *_driver;
559 static Fl_Surface_Device *_surface; // the surface that currently receives graphics output
560 static Fl_Surface_Device *default_surface(); // create surface is none exists yet
561 protected:
563 Fl_Surface_Device(Fl_Graphics_Driver *graphics_driver) {_driver = graphics_driver; };
564 public:
565 static const char *class_id;
566 const char *class_name() {return class_id;};
567 virtual void set_current(void);
569 inline void driver(Fl_Graphics_Driver *graphics_driver) {_driver = graphics_driver;};
571 inline Fl_Graphics_Driver *driver() {return _driver; };
574 static inline Fl_Surface_Device *surface() {
575 return _surface ? _surface : default_surface();
576 };
578 virtual ~Fl_Surface_Device() {}
579 };
580
586 class FL_EXPORT Fl_Display_Device : public Fl_Surface_Device {
587 static Fl_Display_Device *_display; // the platform display device
588 #ifdef __APPLE__
589 friend class Fl_X;
590 friend class Fl_Graphics_Driver;
591 static bool high_res_window_; //< true when drawing to a window of a retina display (Mac OS X only)
592 static bool high_resolution() {return high_res_window_;}
593 #endif
594 public:
595 static const char *class_id;
596 const char *class_name() {return class_id;};
597 Fl_Display_Device(Fl_Graphics_Driver *graphics_driver);
598 static Fl_Display_Device *display_device();
599 };
600
608 class FL_EXPORT Fl_Device_Plugin : public Fl_Plugin {
609 public:
611 Fl_Device_Plugin(const char *pluginName)
612 : Fl_Plugin(klass(), pluginName) { }
614 virtual const char *klass() { return "fltk:device"; }
616 virtual const char *name() = 0;
622 virtual int print(Fl_Widget* w, int x, int y, int height) = 0;
626 #ifdef FL_LIBRARY
627 virtual
628 #endif
629 Fl_RGB_Image* rectangle_capture(Fl_Widget *widget, int x, int y, int w, int h) {return NULL;}
630 };
631
632 #endif // Fl_Device_H
633
634 //
635 // End of "$Id: Fl_Device.H 12030 2016-10-16 15:00:02Z manolo $".
636 //
Fl_Widget
Fl_Widget is the base class for all widgets in FLTK.
Definition: Fl_Widget.H:101
Fl_Graphics_Driver::color
virtual void color(uchar r, uchar g, uchar b)
see fl_color(uchar r, uchar g, uchar b).
Definition: Fl_Device.H:262
fl_end_complex_polygon
void fl_end_complex_polygon()
Ends complex filled polygon, and draws.
Definition: fl_draw.H:466
fl_loop
void fl_loop(int x, int y, int x1, int y1, int x2, int y2)
Outlines a 3-sided polygon with lines.
Definition: fl_draw.H:233
fl_transform_dx
double fl_transform_dx(double x, double y)
Transforms distance using current transformation matrix.
Definition: fl_draw.H:482
Fl_Device_Plugin::klass
virtual const char * klass()
Returns the class name.
Definition: Fl_Device.H:614
Fl_Surface_Device::~Fl_Surface_Device
virtual ~Fl_Surface_Device()
The destructor.
Definition: Fl_Device.H:578
fl_clip_box
int fl_clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H)
Intersects the rectangle with the current clip region and returns the bounding box of the result...
Definition: fl_draw.H:126
Fl_Pixmap
The Fl_Pixmap class supports caching and drawing of colormap (pixmap) images, including transparency...
Definition: Fl_Pixmap.H:41
fl_point
void fl_point(int x, int y)
Draws a single pixel at the given coordinates.
Definition: fl_draw.H:147
Fl_Surface_Device::class_name
const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:566
Fl_Image::h
int h() const
Returns the current image height in pixels.
Definition: Fl_Image.H:115
fl_clip_region
void fl_clip_region(Fl_Region r)
Replaces the top of the clipping stack with a clipping region of any shape.
Definition: fl_draw.H:136
fl_push_matrix
void fl_push_matrix()
Saves the current transformation matrix on the stack.
Definition: fl_draw.H:326
Fl_Surface_Device
A drawing surface that&#39;s susceptible to receive graphical output.
Definition: Fl_Device.H:556
fl_transformed_vertex
void fl_transformed_vertex(double xf, double yf)
Adds coordinate pair to the vertex list without further transformations.
Definition: fl_draw.H:492
Fl_Image::data
const char *const * data() const
Returns a pointer to the current image data array.
Definition: Fl_Image.H:138
fl_gap
void fl_gap()
Call fl_gap() to separate loops of the path.
Definition: fl_draw.H:462
fl_not_clipped
int fl_not_clipped(int x, int y, int w, int h)
Does the rectangle intersect the current clip region?
Definition: fl_draw.H:114
Fl_Device::class_id
static const char * class_id
A string that identifies each subclass of Fl_Device.
Definition: Fl_Device.H:74
fl_rotate
void fl_rotate(double d)
Concatenates rotation transformation onto the current one.
Definition: fl_draw.H:350
fl_draw_image
void fl_draw_image(const uchar *buf, int X, int Y, int W, int H, int D=3, int L=0)
Draws an 8-bit per color RGB or luminance image.
Definition: fl_draw.H:685
fl_color
void fl_color(Fl_Color c)
Sets the color for all subsequent drawing operations.
Definition: fl_draw.H:52
Fl_Graphics_Driver::draw_image_mono
virtual void draw_image_mono(const uchar *buf, int X, int Y, int W, int H, int D=1, int L=0)
see fl_draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D, int L).
Definition: Fl_Device.H:353
Fl_Device::class_name
virtual const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:84
Fl_Graphics_Driver::draw_image_mono
virtual void draw_image_mono(Fl_Draw_Image_Cb cb, void *data, int X, int Y, int W, int H, int D=1)
see fl_draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D)...
Definition: Fl_Device.H:357
Fl_Graphics_Driver::size
Fl_Fontsize size()
see fl_size().
Definition: Fl_Device.H:390
Fl_Font_Descriptor
This a structure for an actual system font, with junk to help choose it and info on character sizes...
Definition: Fl_Font.H:41
gl_start
FL_EXPORT void gl_start()
Creates an OpenGL context.
Definition: gl_start.cxx:56
Fl_Graphics_Driver::draw
virtual void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy)
Draws an Fl_Pixmap object to the device.
Definition: Fl_Device.H:370
fl_begin_polygon
void fl_begin_polygon()
Starts drawing a convex filled polygon.
Definition: fl_draw.H:374
fl_begin_complex_polygon
void fl_begin_complex_polygon()
Starts drawing a complex filled polygon.
Definition: fl_draw.H:455
fl_pop_clip
void fl_pop_clip()
Restores the previous clip region.
Definition: fl_draw.H:103
Fl_Quartz_Graphics_Driver
The Mac OS X-specific graphics class.
Definition: Fl_Device.H:421
fl_begin_line
void fl_begin_line()
Starts drawing a list of lines.
Definition: fl_draw.H:366
Fl_Image
Base class for image caching and drawing.
Definition: Fl_Image.H:55
Fl_Surface_Device::driver
void driver(Fl_Graphics_Driver *graphics_driver)
Sets the graphics driver of this drawing surface.
Definition: Fl_Device.H:569
Fl_Image.H
Fl_Image, Fl_RGB_Image classes.
Fl_Graphics_Driver::scale
void scale(double x)
see fl_scale(double x).
Definition: Fl_Device.H:329
Fl_Image::w
int w() const
Returns the current image width in pixels.
Definition: Fl_Image.H:111
Fl_RGB_Image
The Fl_RGB_Image class supports caching and drawing of full-color images with 1 to 4 channels of colo...
Definition: Fl_Image.H:202
Fl_Image::d
int d() const
Returns the current image depth.
Definition: Fl_Image.H:121
Fl_Graphics_Driver::rtl_draw
virtual void rtl_draw(const char *str, int n, int x, int y)
see fl_rtl_draw(const char *str, int n, int x, int y).
Definition: Fl_Device.H:258
Fl_RGB_Image::draw
virtual void draw(int X, int Y, int W, int H, int cx=0, int cy=0)
Draws the image with a bounding box.
Definition: Fl_Image.cxx:651
fl_end_line
void fl_end_line()
Ends list of lines, and draws.
Definition: fl_draw.H:432
Fl_Graphics_Driver::height
virtual int height()
see fl_height().
Definition: Fl_Device.H:398
Fl_Graphics_Driver::font_descriptor
Fl_Font_Descriptor * font_descriptor()
Returns a pointer to the current Fl_Font_Descriptor for the graphics driver.
Definition: Fl_Device.H:404
Fl_Graphics_Driver::draw
virtual void draw(int angle, const char *str, int n, int x, int y)
see fl_draw(int angle, const char *str, int n, int x, int y).
Definition: Fl_Device.H:256
fl_end_loop
void fl_end_loop()
Ends closed sequence of lines, and draws.
Definition: fl_draw.H:436
fl_curve
void fl_curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3)
Adds a series of points on a Bezier curve to the path.
Definition: fl_draw.H:388
fl_graphics_driver
FL_EXPORT Fl_Graphics_Driver * fl_graphics_driver
Points to the driver that currently receives all graphics requests.
Definition: Fl_Device.cxx:50
Fl_Xlib_Graphics_Driver
The Xlib-specific graphics class.
Definition: Fl_Device.H:507
Fl_Graphics_Driver::fl_matrix
matrix * fl_matrix
Points to the current coordinate transformation matrix.
Definition: Fl_Device.H:224
Fl_Graphics_Driver::descent
virtual int descent()
see fl_descent().
Definition: Fl_Device.H:400
Fl_Display_Device::class_name
const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:596
fl_transform_dy
double fl_transform_dy(double x, double y)
Transforms distance using current transformation matrix.
Definition: fl_draw.H:487
Fl_Device_Plugin::rectangle_capture
Fl_RGB_Image * rectangle_capture(Fl_Widget *widget, int x, int y, int w, int h)
captures a rectangle of a widget as an image
Definition: Fl_Device.H:629
fl_end_polygon
void fl_end_polygon()
Ends convex filled polygon, and draws.
Definition: fl_draw.H:440
Fl_Graphics_Driver::color
Fl_Color color()
see fl_color(void).
Definition: Fl_Device.H:402
fl_mult_matrix
void fl_mult_matrix(double a, double b, double c, double d, double x, double y)
Concatenates another transformation onto the current one.
Definition: fl_draw.H:357
fl_begin_points
void fl_begin_points()
Starts drawing a list of points.
Definition: fl_draw.H:362
fl_line_style
void fl_line_style(int style, int width=0, char *dashes=0)
Sets how to draw lines (the "pen").
Definition: fl_draw.H:177
Fl_Font_Descriptor::size
Fl_Fontsize size
font size
Definition: Fl_Font.H:45
fl_transform_x
double fl_transform_x(double x, double y)
Transforms coordinate using the current transformation matrix.
Definition: fl_draw.H:472
fl_scale
void fl_scale(double x, double y)
Concatenates scaling transformation onto the current one.
Definition: fl_draw.H:335
Fl_GDI_Graphics_Driver::class_name
const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:462
Fl_Graphics_Driver::width
virtual double width(unsigned int c)
see fl_width(unsigned int n).
Definition: Fl_Device.H:394
fl_end_points
void fl_end_points()
Ends list of points, and draws.
Definition: fl_draw.H:428
Fl_Graphics_Driver::font
Fl_Font font()
see fl_font(void).
Definition: Fl_Device.H:388
Fl_Device_Plugin
This plugin socket allows the integration of new device drivers for special window or screen types...
Definition: Fl_Device.H:608
Fl_Surface_Device::Fl_Surface_Device
Fl_Surface_Device(Fl_Graphics_Driver *graphics_driver)
Constructor that sets the graphics driver to use for the created surface.
Definition: Fl_Device.H:563
Fl_Graphics_Driver::matrix
A 2D coordinate transformation matrix.
Definition: Fl_Device.H:114
Fl_Fontsize
int Fl_Fontsize
Size of a font in pixels.
Definition: Enumerations.H:906
Fl_Surface_Device::surface
static Fl_Surface_Device * surface()
The current drawing surface.
Definition: Fl_Device.H:574
Fl_Plugin
Fl_Plugin allows link-time and run-time integration of binary modules.
Definition: Fl_Plugin.H:61
fl_rectf
void fl_rectf(int x, int y, int w, int h)
Colors with current color a rectangle that exactly fills the given bounding box.
Definition: fl_draw.H:206
Fl_Graphics_Driver::font
virtual void font(Fl_Font face, Fl_Fontsize fsize)
see fl_font(Fl_Font face, Fl_Fontsize size).
Definition: Fl_Device.H:386
fl_draw
FL_EXPORT void fl_draw(const char *str, int x, int y)
Draws a nul-terminated UTF-8 string starting at the given x, y location.
Definition: fl_font.cxx:70
Fl_Graphics_Driver::translate
void translate(double x, double y)
see fl_translate(double x, double y).
Definition: Fl_Device.H:331
fl_begin_loop
void fl_begin_loop()
Starts drawing a closed sequence of lines.
Definition: fl_draw.H:370
Fl_Graphics_Driver::~Fl_Graphics_Driver
virtual ~Fl_Graphics_Driver()
The destructor.
Definition: Fl_Device.H:412
Fl_Device::~Fl_Device
virtual ~Fl_Device()
Virtual destructor.
Definition: Fl_Device.H:91
fl_draw_image_mono
void fl_draw_image_mono(const uchar *buf, int X, int Y, int W, int H, int D=1, int L=0)
Draws a gray-scale (1 channel) image.
Definition: fl_draw.H:692
Fl_GDI_Printer_Graphics_Driver::class_name
const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:495
fl_yxline
void fl_yxline(int x, int y, int y1)
Draws a vertical line from (x,y) to (x,y1)
Definition: fl_draw.H:270
Fl_Color
unsigned int Fl_Color
An FLTK color value; see also Colors.
Definition: Enumerations.H:934
fl_push_no_clip
void fl_push_no_clip()
Pushes an empty clip region onto the stack so nothing will be clipped.
Definition: fl_draw.H:95
fl_transform_y
double fl_transform_y(double x, double y)
Transforms coordinate using the current transformation matrix.
Definition: fl_draw.H:477
Fl_Draw_Image_Cb
void(* Fl_Draw_Image_Cb)(void *data, int x, int y, int w, uchar *buf)
signature of image generation callback function.
Definition: Fl_Device.H:49
Fl_Font
int Fl_Font
A font number is an index into the internal font table.
Definition: Enumerations.H:877
Fl_Graphics_Driver::draw_image
virtual void draw_image(const uchar *buf, int X, int Y, int W, int H, int D=3, int L=0)
see fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D, int L).
Definition: Fl_Device.H:351
Fl_Graphics_Driver
A virtual class subclassed for each graphics driver FLTK uses.
Definition: Fl_Device.H:110
fl_translate
void fl_translate(double x, double y)
Concatenates translation transformation onto the current one.
Definition: fl_draw.H:345
Fl_Graphics_Driver::scale
void scale(double x, double y)
see fl_scale(double x, double y).
Definition: Fl_Device.H:327
fl_vertex
void fl_vertex(double x, double y)
Adds a single vertex to the current path.
Definition: fl_draw.H:379
Fl_Bitmap
The Fl_Bitmap class supports caching and drawing of mono-color (bitmap) images.
Definition: Fl_Bitmap.H:33
fl_pop_matrix
void fl_pop_matrix()
Restores the current transformation matrix from the stack.
Definition: fl_draw.H:330
fl_polygon
void fl_polygon(int x, int y, int x1, int y1, int x2, int y2)
Fills a 3-sided polygon.
Definition: fl_draw.H:244
Fl_Graphics_Driver::color
virtual void color(Fl_Color c)
see fl_color(Fl_Color c).
Definition: Fl_Device.H:260
Fl_Graphics_Driver::draw
virtual void draw(Fl_RGB_Image *rgb, int XP, int YP, int WP, int HP, int cx, int cy)
Draws an Fl_RGB_Image object to the device.
Definition: Fl_Device.H:364
fl_xyline
void fl_xyline(int x, int y, int x1)
Draws a horizontal line from (x,y) to (x1,y)
Definition: fl_draw.H:255
fl_restore_clip
void fl_restore_clip()
Undoes any clobbering of clip done by your program.
Definition: fl_draw.H:129
fl_copy_offscreen
void fl_copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy)
Copy a rectangular area of the given offscreen buffer into the current drawing destination.
Definition: Fl_Double_Window.cxx:94
Fl_Device_Plugin::Fl_Device_Plugin
Fl_Device_Plugin(const char *pluginName)
The constructor.
Definition: Fl_Device.H:611
Fl_GDI_Printer_Graphics_Driver
The graphics driver used when printing on MSWindows.
Definition: Fl_Device.H:492
fl_rtl_draw
void fl_rtl_draw(const char *str, int n, int x, int y)
Draws a UTF-8 string of length n bytes right to left starting at the given x, y location.
Definition: fl_draw.H:632
fl_line
void fl_line(int x, int y, int x1, int y1)
Draws a line from (x,y) to (x1,y1)
Definition: fl_draw.H:223
Fl_Xlib_Graphics_Driver::class_name
const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:510
fl_arc
void fl_arc(int x, int y, int w, int h, double a1, double a2)
Draw ellipse sections using integer coordinates.
Definition: fl_draw.H:304
Fl_Graphics_Driver::draw
virtual void draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy)
Draws an Fl_Bitmap object to the device.
Definition: Fl_Device.H:376
Fl_GDI_Graphics_Driver
The MSWindows-specific graphics class.
Definition: Fl_Device.H:459
Fl_Display_Device
A display to which the computer can draw.
Definition: Fl_Device.H:586
Fl_Graphics_Driver::width
virtual double width(const char *str, int n)
see fl_width(const char *str, int n).
Definition: Fl_Device.H:392
Fl_Graphics_Driver::font_descriptor
void font_descriptor(Fl_Font_Descriptor *d)
Sets the current Fl_Font_Descriptor for the graphics driver.
Definition: Fl_Device.H:406
Fl_Quartz_Graphics_Driver::class_name
const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:424
Fl_Graphics_Driver::draw
virtual void draw(const char *str, int n, int x, int y)
see fl_draw(const char *str, int n, int x, int y).
Definition: Fl_Device.H:251
uchar
unsigned char uchar
unsigned char
Definition: fl_types.h:30
fl_font
void fl_font(Fl_Font face, Fl_Fontsize fsize)
Sets the current font, which is then used in various drawing routines.
Definition: fl_draw.H:509
fl_rect
void fl_rect(int x, int y, int w, int h)
Draws a 1-pixel border inside the given bounding box.
Definition: fl_draw.H:201
Fl_Graphics_Driver::draw_image
virtual void draw_image(Fl_Draw_Image_Cb cb, void *data, int X, int Y, int W, int H, int D=3)
see fl_draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D).
Definition: Fl_Device.H:355
fl_push_clip
void fl_push_clip(int x, int y, int w, int h)
Intersects the current clip region with a rectangle and pushes this new region onto the stack...
Definition: fl_draw.H:82
fl_pie
void fl_pie(int x, int y, int w, int h, double a1, double a2)
Draw filled ellipse sections using integer coordinates.
Definition: fl_draw.H:317
Fl_Surface_Device::driver
Fl_Graphics_Driver * driver()
Returns the graphics driver of this drawing surface.
Definition: Fl_Device.H:571
Fl_Device
All graphical output devices and all graphics systems.
Definition: Fl_Device.H:69
Fl_Graphics_Driver::class_name
virtual const char * class_name()
Returns the name of the class of this object.
Definition: Fl_Device.H:384
fl_circle
void fl_circle(double x, double y, double r)
fl_circle() is equivalent to fl_arc(x,y,r,0,360), but may be faster.
Definition: fl_draw.H:424
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