FLTK 1.3.0
fl_draw.H
Go to the documentation of this file.
00001 //
00002 // "$Id$"
00003 //
00004 // Portable drawing function header file for the Fast Light Tool Kit (FLTK).
00005 //
00006 // Copyright 1998-2010 by Bill Spitzak and others.
00007 //
00008 // This library is free software; you can redistribute it and/or
00009 // modify it under the terms of the GNU Library General Public
00010 // License as published by the Free Software Foundation; either
00011 // version 2 of the License, or (at your option) any later version.
00012 //
00013 // This library is distributed in the hope that it will be useful,
00014 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016 // Library General Public License for more details.
00017 //
00018 // You should have received a copy of the GNU Library General Public
00019 // License along with this library; if not, write to the Free Software
00020 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00021 // USA.
00022 //
00023 // Please report all bugs and problems on the following page:
00024 //
00025 //     http://www.fltk.org/str.php
00026 //
00027 
00033 #ifndef fl_draw_H
00034 #define fl_draw_H
00035 
00036 #include <FL/x.H>             // for Fl_Region
00037 #include <FL/Enumerations.H>  // for the color names
00038 #include <FL/Fl_Window.H>     // for fl_set_spot()
00039 #include <FL/Fl_Device.H>     // for fl_graphics_driver
00040 
00041 // Image class...
00042 class Fl_Image;
00043 
00044 // Label flags...
00045 FL_EXPORT extern char fl_draw_shortcut;
00046 
00051 // Colors:
00061 inline void     fl_color(Fl_Color c) {fl_graphics_driver->color(c); } // select indexed color
00063 inline void fl_color(int c) {fl_color((Fl_Color)c);}
00074 inline void     fl_color(uchar r, uchar g, uchar b) {fl_graphics_driver->color(r,g,b); } // select actual color
00079 inline Fl_Color fl_color() {return fl_graphics_driver->color();}
00085 // clip:
00091 inline void fl_push_clip(int x, int y, int w, int h) {fl_graphics_driver->push_clip(x,y,w,h); }
00093 #define fl_clip fl_push_clip
00094 
00097 inline void fl_push_no_clip() {fl_graphics_driver->push_no_clip(); }
00105 inline void fl_pop_clip() {fl_graphics_driver->pop_clip(); }
00116 inline int fl_not_clipped(int x, int y, int w, int h) {return fl_graphics_driver->not_clipped(x,y,w,h); }
00131 inline int fl_clip_box(int x , int y, int w, int h, int& X, int& Y, int& W, int& H) 
00132   {return fl_graphics_driver->clip_box(x,y,w,h,X,Y,W,H); }
00134 inline void fl_restore_clip() { fl_graphics_driver->restore_clip(); };
00141 inline void fl_clip_region(Fl_Region r) { fl_graphics_driver->clip_region(r); };
00145 inline Fl_Region fl_clip_region() { return fl_graphics_driver->clip_region(); };
00146   
00147 
00148 // points:
00152 inline void fl_point(int x, int y) { fl_graphics_driver->point(x,y); }
00153 
00154 // line type:
00182 inline void fl_line_style(int style, int width=0, char* dashes=0) {fl_graphics_driver->line_style(style,width,dashes); }
00183 enum {
00184   FL_SOLID      = 0,            
00185   FL_DASH       = 1,            
00186   FL_DOT        = 2,            
00187   FL_DASHDOT    = 3,            
00188   FL_DASHDOTDOT = 4,            
00189 
00190   FL_CAP_FLAT   = 0x100,        
00191   FL_CAP_ROUND  = 0x200,        
00192   FL_CAP_SQUARE = 0x300,        
00193 
00194   FL_JOIN_MITER = 0x1000,       
00195   FL_JOIN_ROUND = 0x2000,       
00196   FL_JOIN_BEVEL = 0x3000        
00197 };
00198 
00199 // rectangles tweaked to exactly fill the pixel rectangle:
00200 
00206 inline void fl_rect(int x, int y, int w, int h) { fl_graphics_driver->rect(x,y,w,h); }
00207 
00209 inline void fl_rect(int x, int y, int w, int h, Fl_Color c) {fl_color(c); fl_rect(x,y,w,h);}
00211 inline void fl_rectf(int x, int y, int w, int h) { fl_graphics_driver->rectf(x,y,w,h); }
00213 inline void fl_rectf(int x, int y, int w, int h, Fl_Color c) {fl_color(c); fl_rectf(x,y,w,h);}
00214 
00221 /* note: doxygen comment here to avoid triplication in os-speciic files */
00222 FL_EXPORT void fl_rectf(int x, int y, int w, int h, uchar r, uchar g, uchar b);
00223 
00224 // line segments:
00228 inline void fl_line(int x, int y, int x1, int y1) {fl_graphics_driver->line(x,y,x1,y1); }
00232 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); }
00233 
00234 // closed line segments:
00238 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); }
00242 inline void fl_loop(int x, int y, int x1, int y1, int x2, int y2, int x3, int y3) 
00243   {fl_graphics_driver->loop(x,y,x1,y1,x2,y2,x3,y3); }
00244 
00245 // filled polygons
00249 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); }
00253 inline void fl_polygon(int x, int y, int x1, int y1, int x2, int y2, int x3, int y3) 
00254   { fl_graphics_driver->polygon(x,y,x1,y1,x2,y2,x3,y3); }
00255 
00256 // draw rectilinear lines, horizontal segment first:
00260 inline void fl_xyline(int x, int y, int x1) {fl_graphics_driver->xyline(x,y,x1);}
00264 inline void fl_xyline(int x, int y, int x1, int y2) {fl_graphics_driver->xyline(x,y,x1,y2);}
00269 inline void fl_xyline(int x, int y, int x1, int y2, int x3) {fl_graphics_driver->xyline(x,y,x1,y2,x3);}
00270 
00271 // draw rectilinear lines, vertical segment first:
00275 inline void fl_yxline(int x, int y, int y1) {fl_graphics_driver->yxline(x,y,y1);}
00279 inline void fl_yxline(int x, int y, int y1, int x2) {fl_graphics_driver->yxline(x,y,y1,x2);}
00284 inline void fl_yxline(int x, int y, int y1, int x2, int y3) {fl_graphics_driver->yxline(x,y,y1,x2,y3);}
00285 
00286 // circular lines and pie slices (code in fl_arci.C):
00309 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); }
00322 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); }
00324 FL_EXPORT void fl_chord(int x, int y, int w, int h, double a1, double a2); // nyi
00325 
00326 // scalable drawing code (code in fl_vertex.C and fl_arc.C):
00331 inline void fl_push_matrix() { fl_graphics_driver->push_matrix(); };
00335 inline void fl_pop_matrix() { fl_graphics_driver->pop_matrix(); };
00340 inline void fl_scale(double x, double y) { fl_graphics_driver->scale(x, y); };
00345 inline void fl_scale(double x) { fl_graphics_driver->scale(x, x); };
00350 inline void fl_translate(double x, double y) { fl_graphics_driver->translate(x, y); };
00355 inline void fl_rotate(double d) { fl_graphics_driver->rotate(d); };
00362 inline void fl_mult_matrix(double a, double b, double c, double d, double x,double y) 
00363         { fl_graphics_driver->mult_matrix(a, b, c, d, x, y); };
00367 inline void fl_begin_points() {fl_graphics_driver->begin_points(); }
00371 inline void fl_begin_line() {fl_graphics_driver->begin_line(); }
00375 inline void fl_begin_loop() {fl_graphics_driver->begin_loop(); }
00379 inline void fl_begin_polygon() {fl_graphics_driver->begin_polygon(); }
00384 inline void fl_vertex(double x, double y) {fl_graphics_driver->vertex(x,y); }
00393 inline void fl_curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3)
00394   {fl_graphics_driver->curve(X0,Y0,X1,Y1,X2,Y2,X3,Y3); }
00403 inline void fl_arc(double x, double y, double r, double start, double end) {fl_graphics_driver->arc(x,y,r,start,end); }
00411 inline void fl_circle(double x, double y, double r) {fl_graphics_driver->circle(x,y,r); }
00415 inline void fl_end_points() {fl_graphics_driver->end_points(); }
00419 inline void fl_end_line() {fl_graphics_driver->end_line(); }
00423 inline void fl_end_loop() {fl_graphics_driver->end_loop(); }
00427 inline void fl_end_polygon() {fl_graphics_driver->end_polygon(); }
00442 inline void fl_begin_complex_polygon() {fl_graphics_driver->begin_complex_polygon(); }
00449 inline void fl_gap() {fl_graphics_driver->gap(); }
00453 inline void fl_end_complex_polygon() {fl_graphics_driver->end_complex_polygon(); }
00454 // get and use transformed positions:
00459 inline double fl_transform_x(double x, double y) {return fl_graphics_driver->transform_x(x, y); };
00464 inline double fl_transform_y(double x, double y) {return fl_graphics_driver->transform_y(x, y); };
00469 inline double fl_transform_dx(double x, double y) {return fl_graphics_driver->transform_dx(x, y); };
00474 inline double fl_transform_dy(double x, double y) {return fl_graphics_driver->transform_dy(x, y); };
00479 inline void fl_transformed_vertex(double xf, double yf) {fl_graphics_driver->transformed_vertex(xf,yf); }
00484 /* NOTE: doxygen comments here to avoid triplication in os-specific sources */
00485 
00486 // Fonts:
00496 inline void fl_font(Fl_Font face, Fl_Fontsize size) { fl_graphics_driver->font(face,size); }
00497 
00502 inline Fl_Font fl_font() {return fl_graphics_driver->font();}
00507 inline Fl_Fontsize fl_size() {return fl_graphics_driver->size();}
00508 
00509 // information you can get about the current font:
00514 inline int fl_height() {return fl_graphics_driver->height();}
00515 FL_EXPORT int fl_height(int font, int size);
00520 inline int  fl_descent() {return fl_graphics_driver->descent();}
00522 FL_EXPORT double fl_width(const char* txt);
00524 inline double fl_width(const char* txt, int n) {return fl_graphics_driver->width(txt, n);}
00528 inline double fl_width(unsigned int c)  {return fl_graphics_driver->width(c);}
00537 FL_EXPORT void fl_text_extents(const char*, int& dx, int& dy, int& w, int& h); // NO fltk symbol expansion will be performed
00541 inline void fl_text_extents(const char *t, int n, int& dx, int& dy, int& w, int& h)
00542   {fl_graphics_driver->text_extents(t, n, dx, dy, w, h);}
00543 
00544 // font encoding:
00545 // Note: doxygen comments here to avoid duplication for os-sepecific cases
00552 FL_EXPORT const char *fl_latin1_to_local(const char *t, int n=-1);
00559 FL_EXPORT const char *fl_local_to_latin1(const char *t, int n=-1);
00566 FL_EXPORT const char *fl_mac_roman_to_local(const char *t, int n=-1);
00573 FL_EXPORT const char *fl_local_to_mac_roman(const char *t, int n=-1);
00588 FL_EXPORT void fl_draw(const char* str, int x, int y);
00596 FL_EXPORT void fl_draw(int angle, const char* str, int x, int y);
00600 inline void fl_draw(const char* str, int n, int x, int y) {fl_graphics_driver->draw(str,n,x,y); }
00605 inline void fl_draw(int angle,const char* str, int n, int x, int y) {fl_graphics_driver->draw(angle,str,n,x,y); }
00609 inline void fl_rtl_draw(const char* str, int n, int x, int y) {fl_graphics_driver->rtl_draw(str,n,x,y); }
00610 FL_EXPORT void fl_measure(const char* str, int& x, int& y,
00611                           int draw_symbols = 1);
00612 FL_EXPORT void fl_draw(const char* str, int x, int y, int w, int h,
00613                        Fl_Align align,
00614                        Fl_Image* img=0, int draw_symbols = 1);
00615 FL_EXPORT void fl_draw(const char* str, int x, int y, int w, int h,
00616                        Fl_Align align,
00617                        void (*callthis)(const char *,int,int,int),
00618                        Fl_Image* img=0, int draw_symbols = 1);
00619 
00620 // boxtypes:
00621 FL_EXPORT void fl_frame(const char* s, int x, int y, int w, int h);
00622 FL_EXPORT void fl_frame2(const char* s, int x, int y, int w, int h);
00623 FL_EXPORT void fl_draw_box(Fl_Boxtype, int x, int y, int w, int h, Fl_Color);
00624 
00625 // images:
00626 
00660 inline void fl_draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0)
00661   { fl_graphics_driver->draw_image(buf, X, Y, W, H, D, L); }
00662 
00667 inline void fl_draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0)
00668   { fl_graphics_driver->draw_image_mono(buf, X, Y, W, H, D, L); }
00669 
00702 inline void fl_draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3)
00703   { fl_graphics_driver->draw_image(cb, data, X, Y, W, H, D); }
00704 
00709 FL_EXPORT void fl_draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1);
00710 
00716 /* note: doxygen comment here to avoid triplication in os-speciic files */
00717 FL_EXPORT char fl_can_do_alpha_blending();
00718 
00736 /* note: doxygen comment here to avoid triplication in os-speciic files */
00737 FL_EXPORT uchar *fl_read_image(uchar *p,int X,int Y,int W,int H,int alpha=0);
00738 
00739 // pixmaps:
00740 FL_EXPORT int fl_draw_pixmap(/*const*/ char* const* data, int x,int y,Fl_Color=FL_GRAY);
00741 FL_EXPORT int fl_draw_pixmap(const char* const* cdata, int x,int y,Fl_Color=FL_GRAY);
00742 FL_EXPORT int fl_measure_pixmap(/*const*/ char* const* data, int &w, int &h);
00743 FL_EXPORT int fl_measure_pixmap(const char* const* cdata, int &w, int &h);
00744 
00745 // other:
00746 FL_EXPORT void fl_scroll(int X, int Y, int W, int H, int dx, int dy,
00747                          void (*draw_area)(void*, int,int,int,int), void* data);
00748 FL_EXPORT const char* fl_shortcut_label(unsigned int shortcut);
00749 FL_EXPORT const char* fl_shortcut_label(unsigned int shortcut, const char **eom);
00750 FL_EXPORT unsigned int fl_old_shortcut(const char* s);
00751 FL_EXPORT void fl_overlay_rect(int x,int y,int w,int h);
00752 FL_EXPORT void fl_overlay_clear();
00753 FL_EXPORT void fl_cursor(Fl_Cursor, Fl_Color fg=FL_BLACK, Fl_Color bg=FL_WHITE);
00754 FL_EXPORT const char* fl_expand_text(const char* from, char* buf, int maxbuf,
00755                                      double maxw, int& n, double &width,
00756                                      int wrap, int draw_symbols = 0);
00757 
00758 // XIM:
00760 FL_EXPORT void fl_set_status(int X, int Y, int W, int H);
00762 FL_EXPORT void fl_set_spot(int font, int size, int X, int Y, int W, int H, Fl_Window *win=0);
00764 FL_EXPORT void fl_reset_spot(void);
00765 
00766 
00767 
00768 // XForms symbols:
00769 FL_EXPORT int fl_draw_symbol(const char* label,int x,int y,int w,int h, Fl_Color);
00770 FL_EXPORT int fl_add_symbol(const char* name, void (*drawit)(Fl_Color), int scalable);
00773 #endif
00774 
00775 //
00776 // End of "$Id$".
00777 //