FLTK 1.3.4
fl_draw.H
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1 //
2 // "$Id: fl_draw.H 11977 2016-09-25 11:07:06Z AlbrechtS $"
3 //
4 // Portable drawing function header file for the Fast Light Tool Kit (FLTK).
5 //
6 // Copyright 1998-2016 by Bill Spitzak and others.
7 //
8 // This library is free software. Distribution and use rights are outlined in
9 // the file "COPYING" which should have been included with this file. If this
10 // file is missing or damaged, see the license at:
11 //
12 // http://www.fltk.org/COPYING.php
13 //
14 // Please report all bugs and problems on the following page:
15 //
16 // http://www.fltk.org/str.php
17 //
18 
24 #ifndef fl_draw_H
25 #define fl_draw_H
26 
27 #include <FL/x.H> // for Fl_Region
28 #include <FL/Enumerations.H> // for the color names
29 #include <FL/Fl_Window.H> // for fl_set_spot()
30 #include <FL/Fl_Device.H> // for fl_graphics_driver
31 
32 // Image class...
33 class Fl_Image;
34 
35 // Label flags...
36 FL_EXPORT extern char fl_draw_shortcut;
37 
42 // Colors:
52 inline void fl_color(Fl_Color c) {fl_graphics_driver->color(c); } // select indexed color
54 inline void fl_color(int c) {fl_color((Fl_Color)c);}
65 inline void fl_color(uchar r, uchar g, uchar b) {fl_graphics_driver->color(r,g,b); } // select actual color
76 // clip:
82 inline void fl_push_clip(int x, int y, int w, int h) {fl_graphics_driver->push_clip(x,y,w,h); }
91 #define fl_clip fl_push_clip
92 
114 inline int fl_not_clipped(int x, int y, int w, int h) {return fl_graphics_driver->not_clipped(x,y,w,h); }
126 inline int fl_clip_box(int x , int y, int w, int h, int& X, int& Y, int& W, int& H)
127  {return fl_graphics_driver->clip_box(x,y,w,h,X,Y,W,H); }
136 inline void fl_clip_region(Fl_Region r) { fl_graphics_driver->clip_region(r); }
140 inline Fl_Region fl_clip_region() { return fl_graphics_driver->clip_region(); }
141 
142 
143 // points:
147 inline void fl_point(int x, int y) { fl_graphics_driver->point(x,y); }
148 
149 // line type:
177 inline void fl_line_style(int style, int width=0, char* dashes=0) {fl_graphics_driver->line_style(style,width,dashes); }
178 enum {
179  FL_SOLID = 0,
180  FL_DASH = 1,
181  FL_DOT = 2,
184 
185  FL_CAP_FLAT = 0x100,
186  FL_CAP_ROUND = 0x200,
187  FL_CAP_SQUARE = 0x300,
188 
189  FL_JOIN_MITER = 0x1000,
190  FL_JOIN_ROUND = 0x2000,
191  FL_JOIN_BEVEL = 0x3000
192 };
193 
194 // rectangles tweaked to exactly fill the pixel rectangle:
195 
201 inline void fl_rect(int x, int y, int w, int h) { fl_graphics_driver->rect(x,y,w,h); }
202 
204 inline void fl_rect(int x, int y, int w, int h, Fl_Color c) {fl_color(c); fl_rect(x,y,w,h);}
206 inline void fl_rectf(int x, int y, int w, int h) { fl_graphics_driver->rectf(x,y,w,h); }
208 inline void fl_rectf(int x, int y, int w, int h, Fl_Color c) {fl_color(c); fl_rectf(x,y,w,h);}
209 
216 /* note: doxygen comment here to avoid triplication in os-speciic files */
217 FL_EXPORT void fl_rectf(int x, int y, int w, int h, uchar r, uchar g, uchar b);
218 
219 // line segments:
223 inline void fl_line(int x, int y, int x1, int y1) {fl_graphics_driver->line(x,y,x1,y1); }
227 inline void fl_line(int x, int y, int x1, int y1, int x2, int y2) {fl_graphics_driver->line(x,y,x1,y1,x2,y2); }
228 
229 // closed line segments:
233 inline void fl_loop(int x, int y, int x1, int y1, int x2, int y2) {fl_graphics_driver->loop(x,y,x1,y1,x2,y2); }
237 inline void fl_loop(int x, int y, int x1, int y1, int x2, int y2, int x3, int y3)
238  {fl_graphics_driver->loop(x,y,x1,y1,x2,y2,x3,y3); }
239 
240 // filled polygons
244 inline void fl_polygon(int x, int y, int x1, int y1, int x2, int y2) {fl_graphics_driver->polygon(x,y,x1,y1,x2,y2); }
248 inline void fl_polygon(int x, int y, int x1, int y1, int x2, int y2, int x3, int y3)
249  { fl_graphics_driver->polygon(x,y,x1,y1,x2,y2,x3,y3); }
250 
251 // draw rectilinear lines, horizontal segment first:
255 inline void fl_xyline(int x, int y, int x1) {fl_graphics_driver->xyline(x,y,x1);}
259 inline void fl_xyline(int x, int y, int x1, int y2) {fl_graphics_driver->xyline(x,y,x1,y2);}
264 inline void fl_xyline(int x, int y, int x1, int y2, int x3) {fl_graphics_driver->xyline(x,y,x1,y2,x3);}
265 
266 // draw rectilinear lines, vertical segment first:
270 inline void fl_yxline(int x, int y, int y1) {fl_graphics_driver->yxline(x,y,y1);}
274 inline void fl_yxline(int x, int y, int y1, int x2) {fl_graphics_driver->yxline(x,y,y1,x2);}
279 inline void fl_yxline(int x, int y, int y1, int x2, int y3) {fl_graphics_driver->yxline(x,y,y1,x2,y3);}
280 
281 // circular lines and pie slices (code in fl_arci.C):
304 inline void fl_arc(int x, int y, int w, int h, double a1, double a2) {fl_graphics_driver->arc(x,y,w,h,a1,a2); }
317 inline void fl_pie(int x, int y, int w, int h, double a1, double a2) {fl_graphics_driver->pie(x,y,w,h,a1,a2); }
319 FL_EXPORT void fl_chord(int x, int y, int w, int h, double a1, double a2); // nyi
320 
321 // scalable drawing code (code in fl_vertex.C and fl_arc.C):
335 inline void fl_scale(double x, double y) { fl_graphics_driver->scale(x, y); }
340 inline void fl_scale(double x) { fl_graphics_driver->scale(x, x); }
345 inline void fl_translate(double x, double y) { fl_graphics_driver->translate(x, y); }
350 inline void fl_rotate(double d) { fl_graphics_driver->rotate(d); }
357 inline void fl_mult_matrix(double a, double b, double c, double d, double x,double y)
358  { fl_graphics_driver->mult_matrix(a, b, c, d, x, y); }
379 inline void fl_vertex(double x, double y) {fl_graphics_driver->vertex(x,y); }
388 inline void fl_curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3)
389  {fl_graphics_driver->curve(X0,Y0,X1,Y1,X2,Y2,X3,Y3); }
416 inline void fl_arc(double x, double y, double r, double start, double end) {fl_graphics_driver->arc(x,y,r,start,end); }
424 inline void fl_circle(double x, double y, double r) {fl_graphics_driver->circle(x,y,r); }
462 inline void fl_gap() {fl_graphics_driver->gap(); }
467 // get and use transformed positions:
472 inline double fl_transform_x(double x, double y) {return fl_graphics_driver->transform_x(x, y); }
477 inline double fl_transform_y(double x, double y) {return fl_graphics_driver->transform_y(x, y); }
482 inline double fl_transform_dx(double x, double y) {return fl_graphics_driver->transform_dx(x, y); }
487 inline double fl_transform_dy(double x, double y) {return fl_graphics_driver->transform_dy(x, y); }
492 inline void fl_transformed_vertex(double xf, double yf) {fl_graphics_driver->transformed_vertex(xf,yf); }
497 /* NOTE: doxygen comments here to avoid triplication in os-specific sources */
498 
499 // Fonts:
509 inline void fl_font(Fl_Font face, Fl_Fontsize fsize) { fl_graphics_driver->font(face,fsize); }
510 
515 inline Fl_Font fl_font() {return fl_graphics_driver->font();}
521 
522 // information you can get about the current font:
527 inline int fl_height() {return fl_graphics_driver->height();}
528 FL_EXPORT int fl_height(int font, int size);
533 inline int fl_descent() {return fl_graphics_driver->descent();}
536 FL_EXPORT double fl_width(const char* txt);
539 inline double fl_width(const char* txt, int n) {return fl_graphics_driver->width(txt, n);}
544 inline double fl_width(unsigned int c) {return fl_graphics_driver->width(c);}
555 FL_EXPORT void fl_text_extents(const char*, int& dx, int& dy, int& w, int& h); // NO fltk symbol expansion will be performed
559 inline void fl_text_extents(const char *t, int n, int& dx, int& dy, int& w, int& h)
560  {fl_graphics_driver->text_extents(t, n, dx, dy, w, h);}
561 
562 // font encoding:
563 // Note: doxygen comments here to avoid duplication for os-sepecific cases
570 FL_EXPORT const char *fl_latin1_to_local(const char *t, int n=-1);
577 FL_EXPORT const char *fl_local_to_latin1(const char *t, int n=-1);
584 FL_EXPORT const char *fl_mac_roman_to_local(const char *t, int n=-1);
591 FL_EXPORT const char *fl_local_to_mac_roman(const char *t, int n=-1);
606 FL_EXPORT void fl_draw(const char* str, int x, int y);
614 FL_EXPORT void fl_draw(int angle, const char* str, int x, int y);
618 inline void fl_draw(const char* str, int n, int x, int y) {fl_graphics_driver->draw(str,n,x,y); }
628 inline void fl_draw(int angle, const char* str, int n, int x, int y) {fl_graphics_driver->draw(angle,str,n,x,y); }
632 inline void fl_rtl_draw(const char* str, int n, int x, int y) {fl_graphics_driver->rtl_draw(str,n,x,y); }
633 FL_EXPORT void fl_measure(const char* str, int& x, int& y,
634  int draw_symbols = 1);
635 FL_EXPORT void fl_draw(const char* str, int x, int y, int w, int h,
636  Fl_Align align,
637  Fl_Image* img=0, int draw_symbols = 1);
638 FL_EXPORT void fl_draw(const char* str, int x, int y, int w, int h,
639  Fl_Align align,
640  void (*callthis)(const char *,int,int,int),
641  Fl_Image* img=0, int draw_symbols = 1);
642 
643 // boxtypes:
644 FL_EXPORT void fl_frame(const char* s, int x, int y, int w, int h);
645 FL_EXPORT void fl_frame2(const char* s, int x, int y, int w, int h);
646 FL_EXPORT void fl_draw_box(Fl_Boxtype, int x, int y, int w, int h, Fl_Color);
647 
648 // images:
649 
685 inline void fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0)
686  { fl_graphics_driver->draw_image(buf, X, Y, W, H, D, L); }
687 
692 inline void fl_draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0)
693  { fl_graphics_driver->draw_image_mono(buf, X, Y, W, H, D, L); }
694 
728 inline void fl_draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3)
729  { fl_graphics_driver->draw_image(cb, data, X, Y, W, H, D); }
730 
735 inline void fl_draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1)
736  { fl_graphics_driver->draw_image_mono(cb, data, X, Y, W, H, D); }
737 
743 /* note: doxygen comment here to avoid triplication in os-speciic files */
744 FL_EXPORT char fl_can_do_alpha_blending();
745 
763 /* note: doxygen comment here to avoid triplication in os-speciic files */
764 FL_EXPORT uchar *fl_read_image(uchar *p,int X,int Y,int W,int H,int alpha=0);
765 
766 // pixmaps:
767 FL_EXPORT int fl_draw_pixmap(/*const*/ char* const* data, int x,int y,Fl_Color=FL_GRAY);
768 FL_EXPORT int fl_draw_pixmap(const char* const* cdata, int x,int y,Fl_Color=FL_GRAY);
769 FL_EXPORT int fl_measure_pixmap(/*const*/ char* const* data, int &w, int &h);
770 FL_EXPORT int fl_measure_pixmap(const char* const* cdata, int &w, int &h);
771 
772 // other:
773 FL_EXPORT void fl_scroll(int X, int Y, int W, int H, int dx, int dy,
774  void (*draw_area)(void*, int,int,int,int), void* data);
775 FL_EXPORT const char* fl_shortcut_label(unsigned int shortcut);
776 FL_EXPORT const char* fl_shortcut_label(unsigned int shortcut, const char **eom);
777 FL_EXPORT unsigned int fl_old_shortcut(const char* s);
778 FL_EXPORT void fl_overlay_rect(int x,int y,int w,int h);
779 FL_EXPORT void fl_overlay_clear();
780 FL_EXPORT void fl_cursor(Fl_Cursor);
781 FL_EXPORT void fl_cursor(Fl_Cursor, Fl_Color fg, Fl_Color bg=FL_WHITE);
782 FL_EXPORT const char* fl_expand_text(const char* from, char* buf, int maxbuf,
783  double maxw, int& n, double &width,
784  int wrap, int draw_symbols = 0);
785 
786 // XIM:
788 FL_EXPORT void fl_set_status(int X, int Y, int W, int H);
790 FL_EXPORT void fl_set_spot(int font, int size, int X, int Y, int W, int H, Fl_Window *win=0);
792 FL_EXPORT void fl_reset_spot(void);
793 
794 
795 
796 // XForms symbols:
797 FL_EXPORT int fl_draw_symbol(const char* label,int x,int y,int w,int h, Fl_Color);
798 FL_EXPORT int fl_add_symbol(const char* name, void (*drawit)(Fl_Color), int scalable);
801 #endif
802 
803 //
804 // End of "$Id: fl_draw.H 11977 2016-09-25 11:07:06Z AlbrechtS $".
805 //
FL_EXPORT const char * fl_latin1_to_local(const char *t, int n=-1)
Converts text from Windows/X11 latin1 character set to local encoding.
Definition: fl_encoding_latin1.cxx:114
void fl_end_complex_polygon()
Ends complex filled polygon, and draws.
Definition: fl_draw.H:466
virtual void begin_points()
see fl_begin_points().
Definition: fl_vertex.cxx:75
line style: ___________
Definition: fl_draw.H:179
FL_EXPORT void fl_reset_spot(void)
FL_EXPORT void fl_scroll(int X, int Y, int W, int H, int dx, int dy, void(*draw_area)(void *, int, int, int, int), void *data)
Scroll a rectangle and draw the newly exposed portions.
Definition: fl_scroll_area.cxx:40
join style: line join extends to a point
Definition: fl_draw.H:189
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
virtual void begin_loop()
see fl_begin_loop().
Definition: fl_vertex.cxx:79
double fl_transform_dx(double x, double y)
Transforms distance using current transformation matrix.
Definition: fl_draw.H:482
FL_EXPORT void fl_overlay_rect(int x, int y, int w, int h)
Draws a selection rectangle, erasing a previous one by XOR'ing it first.
Definition: fl_overlay.cxx:107
This widget produces an actual window.
Definition: Fl_Window.H:57
declaration of classes Fl_Device, Fl_Graphics_Driver, Fl_Surface_Device, Fl_Display_Device, Fl_Device_Plugin.
Fl_Cursor
The following constants define the mouse cursors that are available in FLTK.
Definition: Enumerations.H:1048
cap style: end is flat
Definition: fl_draw.H:185
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
void fl_point(int x, int y)
Draws a single pixel at the given coordinates.
Definition: fl_draw.H:147
int fl_descent()
Returns the recommended distance above the bottom of a fl_height() tall box to draw the text at so it...
Definition: fl_draw.H:533
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
virtual void text_extents(const char *, int n, int &dx, int &dy, int &w, int &h)
see fl_text_extents(const char*, int n, int& dx, int& dy, int& w, int& h).
Definition: Fl_Device.cxx:68
void fl_push_matrix()
Saves the current transformation matrix on the stack.
Definition: fl_draw.H:326
void fl_transformed_vertex(double xf, double yf)
Adds coordinate pair to the vertex list without further transformations.
Definition: fl_draw.H:492
FL_EXPORT const char * fl_local_to_latin1(const char *t, int n=-1)
Converts text from local encoding to Windowx/X11 latin1 character set.
Definition: fl_encoding_latin1.cxx:119
virtual void label(Fl_Widget *w)
The label() methods are an obsolete way to set the image attribute of a widget or menu item...
Definition: Fl_Image.cxx:127
void fl_gap()
Call fl_gap() to separate loops of the path.
Definition: fl_draw.H:462
FL_EXPORT void fl_set_status(int X, int Y, int W, int H)
virtual void pop_clip()
see fl_pop_clip().
Definition: fl_rect.cxx:620
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
virtual void rect(int x, int y, int w, int h)
see fl_rect(int x, int y, int w, int h).
Definition: fl_rect.cxx:158
FL_EXPORT unsigned int fl_old_shortcut(const char *s)
Emulation of XForms named shortcuts.
Definition: fl_shortcut.cxx:396
FL_EXPORT void fl_set_spot(int font, int size, int X, int Y, int W, int H, Fl_Window *win=0)
void fl_rotate(double d)
Concatenates rotation transformation onto the current one.
Definition: fl_draw.H:350
int fl_height()
Returns the recommended minimum line spacing for the current font.
Definition: fl_draw.H:527
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
void fl_color(Fl_Color c)
Sets the color for all subsequent drawing operations.
Definition: fl_draw.H:52
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
virtual void loop(int x0, int y0, int x1, int y1, int x2, int y2)
see fl_loop(int x0, int y0, int x1, int y1, int x2, int y2).
Definition: fl_rect.cxx:408
FL_EXPORT void fl_overlay_clear()
Erase a selection rectangle without drawing a new one.
Definition: fl_overlay.cxx:100
virtual int not_clipped(int x, int y, int w, int h)
see fl_not_clipped(int x, int y, int w, int h).
Definition: fl_rect.cxx:628
Fl_Fontsize size()
see fl_size().
Definition: Fl_Device.H:390
virtual void xyline(int x, int y, int x1)
see fl_xyline(int x, int y, int x1).
Definition: fl_rect.cxx:198
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
void fl_begin_polygon()
Starts drawing a convex filled polygon.
Definition: fl_draw.H:374
void fl_begin_complex_polygon()
Starts drawing a complex filled polygon.
Definition: fl_draw.H:455
void fl_pop_clip()
Restores the previous clip region.
Definition: fl_draw.H:103
FL_EXPORT const char * fl_local_to_mac_roman(const char *t, int n=-1)
Converts text from local encoding to Mac Roman character set.
Definition: fl_encoding_mac_roman.cxx:79
void fl_begin_line()
Starts drawing a list of lines.
Definition: fl_draw.H:366
void pop_matrix()
see fl_pop_matrix().
Definition: fl_vertex.cxx:45
Base class for image caching and drawing.
Definition: Fl_Image.H:55
FL_EXPORT void fl_text_extents(const char *, int &dx, int &dy, int &w, int &h)
Determines the minimum pixel dimensions of a nul-terminated string.
Definition: fl_font.cxx:78
FL_EXPORT char fl_can_do_alpha_blending()
Checks whether platform supports true alpha blending for RGBA images.
Definition: Fl_Double_Window.cxx:263
virtual void point(int x, int y)
see fl_point(int x, int y).
Definition: fl_rect.cxx:515
void rotate(double d)
see fl_rotate(double d).
Definition: fl_vertex.cxx:63
line style: _ . _ . _ .
Definition: fl_draw.H:182
Fl_Region clip_region()
see fl_clip_region().
Definition: fl_rect.cxx:572
FL_EXPORT int fl_draw_symbol(const char *label, int x, int y, int w, int h, Fl_Color)
Draw the named symbol in the given rectangle using the given color.
Definition: fl_symbols.cxx:103
virtual void end_loop()
see fl_end_loop().
Definition: fl_vertex.cxx:159
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
virtual void transformed_vertex(double xf, double yf)
see fl_transformed_vertex(double xf, double yf).
Definition: fl_vertex.cxx:103
void fl_end_line()
Ends list of lines, and draws.
Definition: fl_draw.H:432
Fl_Boxtype
Definition: Enumerations.H:603
virtual int height()
see fl_height().
Definition: Fl_Device.H:398
Fl_Fontsize fl_size()
Returns the size set by the most recent call to fl_font().
Definition: fl_draw.H:520
FL_EXPORT int fl_measure_pixmap(char *const *data, int &w, int &h)
Get the dimensions of a pixmap.
Definition: fl_draw_pixmap.cxx:52
FL_EXPORT void fl_chord(int x, int y, int w, int h, double a1, double a2)
fl_chord declaration is a place holder - the function does not yet exist
void fl_end_loop()
Ends closed sequence of lines, and draws.
Definition: fl_draw.H:436
FL_EXPORT int fl_add_symbol(const char *name, void(*drawit)(Fl_Color), int scalable)
Adds a symbol to the system.
Definition: fl_symbols.cxx:78
This file contains type definitions and general enumerations.
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_EXPORT Fl_Graphics_Driver * fl_graphics_driver
Points to the driver that currently receives all graphics requests.
Definition: Fl_Device.cxx:50
virtual void begin_polygon()
see fl_begin_polygon().
Definition: fl_vertex.cxx:81
virtual void end_line()
see fl_end_line().
Definition: fl_vertex.cxx:133
virtual void end_complex_polygon()
see fl_end_complex_polygon().
Definition: fl_vertex.cxx:213
virtual void begin_complex_polygon()
see fl_begin_complex_polygon().
Definition: fl_vertex.cxx:192
virtual void polygon(int x0, int y0, int x1, int y1, int x2, int y2)
see fl_polygon(int x0, int y0, int x1, int y1, int x2, int y2).
Definition: fl_rect.cxx:463
virtual int descent()
see fl_descent().
Definition: Fl_Device.H:400
double fl_transform_dy(double x, double y)
Transforms distance using current transformation matrix.
Definition: fl_draw.H:487
void fl_end_polygon()
Ends convex filled polygon, and draws.
Definition: fl_draw.H:440
Fl_Window widget .
cap style: end wraps end point
Definition: fl_draw.H:187
line style: _ _ _ _ _ _
Definition: fl_draw.H:180
virtual void line_style(int style, int width=0, char *dashes=0)
see fl_line_style(int style, int width, char* dashes).
Definition: fl_line_style.cxx:50
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
void fl_begin_points()
Starts drawing a list of points.
Definition: fl_draw.H:362
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_EXPORT void fl_frame2(const char *s, int x, int y, int w, int h)
Draws a series of line segments around the given box.
Definition: fl_boxtype.cxx:141
double fl_transform_x(double x, double y)
Transforms coordinate using the current transformation matrix.
Definition: fl_draw.H:472
FL_EXPORT void fl_draw_box(Fl_Boxtype, int x, int y, int w, int h, Fl_Color)
Draws a box using given type, position, size and color.
Definition: fl_boxtype.cxx:436
void fl_scale(double x, double y)
Concatenates scaling transformation onto the current one.
Definition: fl_draw.H:335
FL_EXPORT const char * fl_expand_text(const char *from, char *buf, int maxbuf, double maxw, int &n, double &width, int wrap, int draw_symbols=0)
Copy from to buf, replacing control characters with ^X.
Definition: fl_draw.cxx:135
virtual void begin_line()
see fl_begin_line().
Definition: fl_vertex.cxx:77
void fl_end_points()
Ends list of points, and draws.
Definition: fl_draw.H:428
virtual void gap()
see fl_gap().
Definition: fl_vertex.cxx:200
const char *const * data() const
Returns a pointer to the current image data array.
Definition: Fl_Image.H:138
virtual void curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3)
see fl_curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3...
Definition: fl_curve.cxx:32
int Fl_Fontsize
Size of a font in pixels.
Definition: Enumerations.H:906
line style: _ . . _ . .
Definition: fl_draw.H:183
FL_EXPORT int fl_draw_pixmap(char *const *data, int x, int y, Fl_Color=FL_GRAY)
Draw XPM image data, with the top-left corner at the given position.
Definition: fl_draw_pixmap.cxx:78
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
cap style: end is round
Definition: fl_draw.H:186
virtual void font(Fl_Font face, Fl_Fontsize fsize)
see fl_font(Fl_Font face, Fl_Fontsize size).
Definition: Fl_Device.H:386
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
void translate(double x, double y)
see fl_translate(double x, double y).
Definition: Fl_Device.H:331
virtual void vertex(double x, double y)
see fl_vertex(double x, double y).
Definition: fl_vertex.cxx:111
void fl_begin_loop()
Starts drawing a closed sequence of lines.
Definition: fl_draw.H:370
void restore_clip()
see fl_restore_clip().
Definition: fl_rect.cxx:542
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
int d() const
Returns the current image depth.
Definition: Fl_Image.H:121
double transform_dx(double x, double y)
see fl_transform_dx(double x, double y).
Definition: fl_vertex.cxx:87
void fl_yxline(int x, int y, int y1)
Draws a vertical line from (x,y) to (x,y1)
Definition: fl_draw.H:270
unsigned int Fl_Color
An FLTK color value; see also Colors.
Definition: Enumerations.H:934
virtual void yxline(int x, int y, int y1)
see fl_yxline(int x, int y, int y1).
Definition: fl_rect.cxx:281
void fl_push_no_clip()
Pushes an empty clip region onto the stack so nothing will be clipped.
Definition: fl_draw.H:95
double fl_transform_y(double x, double y)
Transforms coordinate using the current transformation matrix.
Definition: fl_draw.H:477
int Fl_Font
A font number is an index into the internal font table.
Definition: Enumerations.H:877
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
virtual void push_no_clip()
see fl_push_no_clip().
Definition: fl_rect.cxx:613
virtual void circle(double x, double y, double r)
see fl_circle(double x, double y, double r).
Definition: fl_vertex.cxx:244
void push_matrix()
see fl_push_matrix().
Definition: fl_vertex.cxx:38
virtual void arc(double x, double y, double r, double start, double end)
see fl_arc(double x, double y, double r, double start, double end).
Definition: fl_arc.cxx:37
line style: . . . . . .
Definition: fl_draw.H:181
virtual void pie(int x, int y, int w, int h, double a1, double a2)
see fl_pie(int x, int y, int w, int h, double a1, double a2).
Definition: fl_arci.cxx:76
unsigned Fl_Align
FLTK type for alignment control.
Definition: Enumerations.H:828
void fl_translate(double x, double y)
Concatenates translation transformation onto the current one.
Definition: fl_draw.H:345
FL_EXPORT const char * fl_shortcut_label(unsigned int shortcut)
Get a human-readable string from a shortcut value.
Definition: fl_shortcut.cxx:199
int w() const
Returns the current image width in pixels.
Definition: Fl_Image.H:111
void scale(double x, double y)
see fl_scale(double x, double y).
Definition: Fl_Device.H:327
void fl_vertex(double x, double y)
Adds a single vertex to the current path.
Definition: fl_draw.H:379
FL_EXPORT const char * fl_mac_roman_to_local(const char *t, int n=-1)
Converts text from Mac Roman character set to local encoding.
Definition: fl_encoding_mac_roman.cxx:100
FL_EXPORT void fl_frame(const char *s, int x, int y, int w, int h)
Draws a series of line segments around the given box.
Definition: fl_boxtype.cxx:107
void fl_pop_matrix()
Restores the current transformation matrix from the stack.
Definition: fl_draw.H:330
virtual void line(int x, int y, int x1, int y1)
see fl_line(int x, int y, int x1, int y1).
Definition: fl_rect.cxx:362
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
virtual void color(Fl_Color c)
see fl_color(Fl_Color c).
Definition: Fl_Device.H:260
void fl_xyline(int x, int y, int x1)
Draws a horizontal line from (x,y) to (x1,y)
Definition: fl_draw.H:255
double transform_y(double x, double y)
see fl_transform_y(double x, double y).
Definition: fl_vertex.cxx:85
join style: line join is tidied
Definition: fl_draw.H:191
int h() const
Returns the current image height in pixels.
Definition: Fl_Image.H:115
void fl_restore_clip()
Undoes any clobbering of clip done by your program.
Definition: fl_draw.H:129
virtual void rectf(int x, int y, int w, int h)
see fl_rectf(int x, int y, int w, int h).
Definition: fl_rect.cxx:180
virtual int clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H)
see fl_clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H).
Definition: fl_rect.cxx:659
FL_EXPORT uchar * fl_read_image(uchar *p, int X, int Y, int W, int H, int alpha=0)
Reads an RGB(A) image from the current window or off-screen buffer.
Definition: fl_read_image.cxx:152
virtual void end_polygon()
see fl_end_polygon().
Definition: fl_vertex.cxx:165
double transform_dy(double x, double y)
see fl_transform_dy(double x, double y).
Definition: fl_vertex.cxx:89
virtual void push_clip(int x, int y, int w, int h)
see fl_push_clip(int x, int y, int w, int h).
Definition: fl_rect.cxx:576
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_EXPORT void fl_cursor(Fl_Cursor)
Sets the cursor for the current window to the specified shape and colors.
Definition: fl_cursor.cxx:42
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
double transform_x(double x, double y)
see fl_transform_x(double x, double y).
Definition: fl_vertex.cxx:83
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_EXPORT void fl_measure(const char *str, int &x, int &y, int draw_symbols=1)
Measure how wide and tall the string will be when printed by the fl_draw() function with align parame...
Definition: fl_draw.cxx:380
virtual double width(const char *str, int n)
see fl_width(const char *str, int n).
Definition: Fl_Device.H:392
virtual void end_points()
see fl_end_points().
Definition: fl_vertex.cxx:115
void mult_matrix(double a, double b, double c, double d, double x, double y)
see fl_mult_matrix(double a, double b, double c, double d, double x, double y).
Definition: fl_vertex.cxx:52
join style: line join is rounded
Definition: fl_draw.H:190
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
unsigned char uchar
unsigned char
Definition: fl_types.h:30
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
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
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
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_EXPORT double fl_width(const char *txt)
Returns the typographical width of a nul-terminated string using the current font face and size...
Definition: fl_font.cxx:65
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