957fa1fe37
These types of boxes frame a background with a rectangular frame of another color. The previous procedure to draw them was not robust to GUI rescaling creating cases where space between the border and the background was not drawn. The new drawing procedure for these boxes first paints the whole area (frame included) with the background color and next draws the frame over the just painted rectangle. No uncolored space is possible. It was also necessary to very slightly modify Fl_Scalable_Graphics_Driver::rect() used by the Windows and X11 (no Cairo) backends to make sure fl_rect(x,y,w,h) exactly frames fl_rectf(x,y,w,h) without drawing outside the filled area.
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
//
|
|
// Shadow box drawing routines for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2011 by Bill Spitzak and others.
|
|
//
|
|
// This library is free software. Distribution and use rights are outlined in
|
|
// the file "COPYING" which should have been included with this file. If this
|
|
// file is missing or damaged, see the license at:
|
|
//
|
|
// https://www.fltk.org/COPYING.php
|
|
//
|
|
// Please see the following page on how to report bugs and issues:
|
|
//
|
|
// https://www.fltk.org/bugs.php
|
|
//
|
|
|
|
#include <FL/Fl.H>
|
|
#include <FL/fl_draw.H>
|
|
|
|
// Global parameters for box drawing algorithm:
|
|
//
|
|
// BW = box shadow width
|
|
#define BW (Fl::box_shadow_width())
|
|
|
|
static void fl_shadow_frame(int x, int y, int w, int h, Fl_Color c) {
|
|
fl_color(FL_DARK3);
|
|
fl_rectf(x+BW, y+h-BW, w - BW, BW);
|
|
fl_rectf(x+w-BW, y+BW, BW, h - BW);
|
|
Fl::set_box_color(c);
|
|
fl_rect(x,y,w-BW,h-BW);
|
|
}
|
|
|
|
static void fl_shadow_box(int x, int y, int w, int h, Fl_Color c) {
|
|
Fl::set_box_color(c);
|
|
fl_rectf(x,y,w-BW,h-BW);
|
|
fl_shadow_frame(x,y,w,h,FL_GRAY0);
|
|
}
|
|
|
|
extern void fl_internal_boxtype(Fl_Boxtype, Fl_Box_Draw_F*, Fl_Box_Draw_Focus_F* =NULL);
|
|
Fl_Boxtype fl_define_FL_SHADOW_BOX() {
|
|
fl_internal_boxtype(_FL_SHADOW_FRAME, fl_shadow_frame);
|
|
fl_internal_boxtype(_FL_SHADOW_BOX, fl_shadow_box);
|
|
return _FL_SHADOW_BOX;
|
|
}
|