60335167b2
Kept original author and copyright. Added standard fltk LGPL header notice + Added missing comment to fl_width() related to latest utf8 STR#2086 related fix in r6539 and r6540. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6542 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
294 lines
12 KiB
C++
294 lines
12 KiB
C++
//
|
|
// "$Id$"
|
|
//
|
|
// Portable drawing function header file for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2008 by Bill Spitzak and others.
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Library General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Library General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Library General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
// USA.
|
|
//
|
|
// Please report all bugs and problems on the following page:
|
|
//
|
|
// http://www.fltk.org/str.php
|
|
//
|
|
|
|
/**
|
|
\file fl_draw.H
|
|
\brief utility header to pull drawing functions together
|
|
*/
|
|
|
|
#ifndef fl_draw_H
|
|
#define fl_draw_H
|
|
|
|
#include "Enumerations.H" // for the color names
|
|
|
|
// Image class...
|
|
class Fl_Image;
|
|
|
|
// Label flags...
|
|
FL_EXPORT extern char fl_draw_shortcut;
|
|
|
|
// Colors:
|
|
FL_EXPORT void fl_color(Fl_Color i); // select indexed color
|
|
/** for back compatibility - use fl_color(Fl_Color c) instead */
|
|
inline void fl_color(int c) {fl_color((Fl_Color)c);}
|
|
FL_EXPORT void fl_color(uchar r, uchar g, uchar b); // select actual color
|
|
extern FL_EXPORT Fl_Color fl_color_;
|
|
/**
|
|
Returns the last fl_color() that was set.
|
|
This can be used for state save/restore.
|
|
*/
|
|
inline Fl_Color fl_color() {return fl_color_;}
|
|
|
|
// clip:
|
|
FL_EXPORT void fl_push_clip(int x, int y, int w, int h);
|
|
/** The fl_clip() name is deprecated and will be removed from future releases */
|
|
#define fl_clip fl_push_clip
|
|
FL_EXPORT void fl_push_no_clip();
|
|
FL_EXPORT void fl_pop_clip();
|
|
FL_EXPORT int fl_not_clipped(int x, int y, int w, int h);
|
|
FL_EXPORT int fl_clip_box(int, int, int, int, int& x, int& y, int& w, int& h);
|
|
|
|
// points:
|
|
FL_EXPORT void fl_point(int x, int y);
|
|
|
|
// line type:
|
|
FL_EXPORT void fl_line_style(int style, int width=0, char* dashes=0);
|
|
enum {
|
|
FL_SOLID = 0, ///< line style: <tt>___________</tt>
|
|
FL_DASH = 1, ///< line style: <tt>_ _ _ _ _ _</tt>
|
|
FL_DOT = 2, ///< line style: <tt>. . . . . .</tt>
|
|
FL_DASHDOT = 3, ///< line style: <tt>_ . _ . _ .</tt>
|
|
FL_DASHDOTDOT = 4, ///< line style: <tt>_ . . _ . .</tt>
|
|
|
|
FL_CAP_FLAT = 0x100, ///< cap style: end is flat
|
|
FL_CAP_ROUND = 0x200, ///< cap style: end is round
|
|
FL_CAP_SQUARE = 0x300, ///< cap style: end wraps end point
|
|
|
|
FL_JOIN_MITER = 0x1000, ///< join style: line join extends to a point
|
|
FL_JOIN_ROUND = 0x2000, ///< join style: line join is rounded
|
|
FL_JOIN_BEVEL = 0x3000 ///< join style: line join is tidied
|
|
};
|
|
|
|
// rectangles tweaked to exactly fill the pixel rectangle:
|
|
FL_EXPORT void fl_rect(int x, int y, int w, int h);
|
|
/** Draw a 1-pixel border \e inside the given bounding box */
|
|
inline void fl_rect(int x, int y, int w, int h, Fl_Color c) {fl_color(c); fl_rect(x,y,w,h);}
|
|
FL_EXPORT void fl_rectf(int x, int y, int w, int h);
|
|
/** Color a rectangle that exactly fills the given bounding box */
|
|
inline void fl_rectf(int x, int y, int w, int h, Fl_Color c) {fl_color(c); fl_rectf(x,y,w,h);}
|
|
|
|
// line segments:
|
|
FL_EXPORT void fl_line(int x, int y, int x1, int y1);
|
|
FL_EXPORT void fl_line(int x, int y, int x1, int y1, int x2, int y2);
|
|
|
|
// closed line segments:
|
|
FL_EXPORT void fl_loop(int x, int y, int x1, int y1, int x2, int y2);
|
|
FL_EXPORT void fl_loop(int x, int y, int x1, int y1, int x2, int y2, int x3, int y3);
|
|
|
|
// filled polygons
|
|
FL_EXPORT void fl_polygon(int x, int y, int x1, int y1, int x2, int y2);
|
|
FL_EXPORT void fl_polygon(int x, int y, int x1, int y1, int x2, int y2, int x3, int y3);
|
|
|
|
// draw rectilinear lines, horizontal segment first:
|
|
FL_EXPORT void fl_xyline(int x, int y, int x1);
|
|
FL_EXPORT void fl_xyline(int x, int y, int x1, int y2);
|
|
FL_EXPORT void fl_xyline(int x, int y, int x1, int y2, int x3);
|
|
|
|
// draw rectilinear lines, vertical segment first:
|
|
FL_EXPORT void fl_yxline(int x, int y, int y1);
|
|
FL_EXPORT void fl_yxline(int x, int y, int y1, int x2);
|
|
FL_EXPORT void fl_yxline(int x, int y, int y1, int x2, int y3);
|
|
|
|
// circular lines and pie slices (code in fl_arci.C):
|
|
FL_EXPORT void fl_arc(int x, int y, int w, int h, double a1, double a2);
|
|
FL_EXPORT void fl_pie(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 */
|
|
FL_EXPORT void fl_chord(int x, int y, int w, int h, double a1, double a2); // nyi
|
|
|
|
// scalable drawing code (code in fl_vertex.C and fl_arc.C):
|
|
FL_EXPORT void fl_push_matrix();
|
|
FL_EXPORT void fl_pop_matrix();
|
|
FL_EXPORT void fl_scale(double x, double y);
|
|
FL_EXPORT void fl_scale(double x);
|
|
FL_EXPORT void fl_translate(double x, double y);
|
|
FL_EXPORT void fl_rotate(double d);
|
|
FL_EXPORT void fl_mult_matrix(double a, double b, double c, double d, double x,double y);
|
|
FL_EXPORT void fl_begin_points();
|
|
FL_EXPORT void fl_begin_line();
|
|
FL_EXPORT void fl_begin_loop();
|
|
FL_EXPORT void fl_begin_polygon();
|
|
FL_EXPORT void fl_vertex(double x, double y);
|
|
FL_EXPORT void fl_curve(double X0, double Y0, double X1, double Y1, double X2, double Y2, double X3, double Y3);
|
|
FL_EXPORT void fl_arc(double x, double y, double r, double start, double a);
|
|
FL_EXPORT void fl_circle(double x, double y, double r);
|
|
FL_EXPORT void fl_end_points();
|
|
FL_EXPORT void fl_end_line();
|
|
FL_EXPORT void fl_end_loop();
|
|
FL_EXPORT void fl_end_polygon();
|
|
FL_EXPORT void fl_begin_complex_polygon();
|
|
FL_EXPORT void fl_gap();
|
|
FL_EXPORT void fl_end_complex_polygon();
|
|
// get and use transformed positions:
|
|
FL_EXPORT double fl_transform_x(double x, double y);
|
|
FL_EXPORT double fl_transform_y(double x, double y);
|
|
FL_EXPORT double fl_transform_dx(double x, double y);
|
|
FL_EXPORT double fl_transform_dy(double x, double y);
|
|
FL_EXPORT void fl_transformed_vertex(double x, double y);
|
|
|
|
/* NOTE: doxygen comments here to avoid triplication in os-specific sources */
|
|
/**
|
|
Set the current font, which is then used in various drawing routines,
|
|
You may call this outside a draw context if necessary to cal fl_width(),
|
|
but on X this will open the display.
|
|
|
|
The font is identified by a \a face and a \a size.
|
|
The size of the font is measured in pixels and not "points".
|
|
Lines should be spaced \a size pixels apart or more.
|
|
*/
|
|
FL_EXPORT void fl_font(Fl_Font face, Fl_Fontsize size);
|
|
/** current font index */
|
|
extern FL_EXPORT Fl_Font fl_font_;
|
|
/**
|
|
Returns the \a face set by the most recent call to fl_font().
|
|
Tgis can be used to save/restore the font.
|
|
*/
|
|
inline Fl_Font fl_font() {return fl_font_;}
|
|
/** current font size */
|
|
extern FL_EXPORT Fl_Fontsize fl_size_;
|
|
/**
|
|
Returns the \a face set by the most recent call to fl_font().
|
|
Tgis can be used to save/restore the font.
|
|
*/
|
|
inline Fl_Fontsize fl_size() {return fl_size_;}
|
|
|
|
// information you can get about the current font:
|
|
/**
|
|
Recommended minimum line spacing for the current font.
|
|
You can also use the value of \a size passed to fl_font()
|
|
*/
|
|
FL_EXPORT int fl_height(); // using "size" should work ok
|
|
/**
|
|
Dummy passthru function called only in Fl_Text_Display that simply returns
|
|
the font height as given by the \a size parameter in the same call!
|
|
|
|
\todo Is fl_height(int, int size) required for Fl_Text_Dispay?
|
|
Why not use \a size parameter directly?
|
|
*/
|
|
inline int fl_height(int, int size) {return size;}
|
|
/**
|
|
Recommended distance above the bottom of a fl_height() tall box to
|
|
draw the text at so it looks centered vertically in that box.
|
|
*/
|
|
FL_EXPORT int fl_descent();
|
|
/** Return the typographical width of a nul-terminated string */
|
|
FL_EXPORT double fl_width(const char* txt);
|
|
/** Return the typographical width of a sequence of \a n characters */
|
|
FL_EXPORT double fl_width(const char* txt, int n);
|
|
/** Return the typographical width of a single character :
|
|
\note if a valid fl_gc is NOT found then it uses the first window gc,
|
|
or the screen gc if no fltk window is available when called. */
|
|
FL_EXPORT double fl_width(Fl_Unichar);
|
|
/** Determine the minimum pixel dimensions of a nul-terminated string */
|
|
FL_EXPORT void fl_text_extents(const char*, int& dx, int& dy, int& w, int& h); // NO fltk symbol expansion
|
|
/** Determine the minimum pixel dimensions of a sequence of \a n characters */
|
|
FL_EXPORT void fl_text_extents(const char*, int n, int& dx, int& dy, int& w, int& h);
|
|
|
|
/**
|
|
Draw a nul-terminated string starting at the given location.
|
|
Text is aligned to the left and to the baseline of the font.
|
|
To alighn to the bottom, subtract fl_descent() from \a y.
|
|
To alignn to the top, subtract fl_descent() and add fl_height().
|
|
This version fo fl_draw provides direct access to the text drawing
|
|
function of the underlying OS. It does not apply any special handling
|
|
to control characters.
|
|
*/
|
|
FL_EXPORT void fl_draw(const char* str, int x, int y);
|
|
/**
|
|
Draw an array of \a n characters starting at the given location.
|
|
*/
|
|
FL_EXPORT void fl_draw(const char* str, int n, int x, int y);
|
|
/**
|
|
Draw and array of \a n characters right to left starting at given location.
|
|
*/
|
|
FL_EXPORT void fl_rtl_draw(const char*, int n, int x, int y);
|
|
FL_EXPORT void fl_measure(const char* str, int& x, int& y,
|
|
int draw_symbols = 1);
|
|
FL_EXPORT void fl_draw(const char* str, int x, int y, int w, int h,
|
|
Fl_Align align,
|
|
Fl_Image* img=0, int draw_symbols = 1);
|
|
FL_EXPORT void fl_draw(const char* str, int x, int y, int w, int h,
|
|
Fl_Align align,
|
|
void (*callthis)(const char *,int,int,int),
|
|
Fl_Image* img=0, int draw_symbols = 1);
|
|
|
|
// font encoding:
|
|
FL_EXPORT const char *fl_latin1_to_local(const char *, int n=-1);
|
|
FL_EXPORT const char *fl_local_to_latin1(const char *, int n=-1);
|
|
FL_EXPORT const char *fl_mac_roman_to_local(const char *, int n=-1);
|
|
FL_EXPORT const char *fl_local_to_mac_roman(const char *, int n=-1);
|
|
|
|
// boxtypes:
|
|
FL_EXPORT void fl_frame(const char* s, int x, int y, int w, int h);
|
|
FL_EXPORT void fl_frame2(const char* s, int x, int y, int w, int h);
|
|
FL_EXPORT void fl_draw_box(Fl_Boxtype, int x, int y, int w, int h, Fl_Color);
|
|
|
|
// images:
|
|
/** signature of some image drawing functions passed as parameters */
|
|
typedef void (*Fl_Draw_Image_Cb)(void*,int,int,int,uchar*);
|
|
FL_EXPORT void fl_draw_image(const uchar*, int,int,int,int, int delta=3, int ldelta=0);
|
|
FL_EXPORT void fl_draw_image_mono(const uchar*, int,int,int,int, int delta=1, int ld=0);
|
|
FL_EXPORT void fl_draw_image(Fl_Draw_Image_Cb, void*, int,int,int,int, int delta=3);
|
|
FL_EXPORT void fl_draw_image_mono(Fl_Draw_Image_Cb, void*, int,int,int,int, int delta=1);
|
|
FL_EXPORT void fl_rectf(int x, int y, int w, int h, uchar r, uchar g, uchar b);
|
|
FL_EXPORT char fl_can_do_alpha_blending();
|
|
|
|
FL_EXPORT uchar *fl_read_image(uchar *p, int x,int y, int w, int h, int alpha=0);
|
|
|
|
// pixmaps:
|
|
FL_EXPORT int fl_draw_pixmap(/*const*/ char* const* data, int x,int y,Fl_Color=FL_GRAY);
|
|
FL_EXPORT int fl_measure_pixmap(/*const*/ char* const* data, int &w, int &h);
|
|
FL_EXPORT int fl_draw_pixmap(const char* const* data, int x,int y,Fl_Color=FL_GRAY);
|
|
FL_EXPORT int fl_measure_pixmap(const char* const* data, int &w, int &h);
|
|
|
|
// other:
|
|
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);
|
|
FL_EXPORT const char* fl_shortcut_label(int);
|
|
FL_EXPORT void fl_overlay_rect(int,int,int,int);
|
|
FL_EXPORT void fl_overlay_clear();
|
|
FL_EXPORT void fl_cursor(Fl_Cursor, Fl_Color=FL_BLACK, Fl_Color=FL_WHITE);
|
|
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);
|
|
|
|
// XIM:
|
|
FL_EXPORT void fl_set_status(int X, int Y, int W, int H);
|
|
FL_EXPORT void fl_set_spot(int font, int size, int x, int y, int w, int h);
|
|
FL_EXPORT void fl_reset_spot(void);
|
|
|
|
|
|
|
|
// XForms symbols:
|
|
FL_EXPORT int fl_draw_symbol(const char* label,int x,int y,int w,int h, Fl_Color);
|
|
FL_EXPORT int fl_add_symbol(const char* name, void (*drawit)(Fl_Color), int scalable);
|
|
|
|
#endif
|
|
|
|
//
|
|
// End of "$Id$".
|
|
//
|