f6cb583e27
fl_create_offscreen_with_alpha() by Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha() git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@9278 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
322 lines
9.6 KiB
C++
322 lines
9.6 KiB
C++
//
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// "$Id$"
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//
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// Mouse cursor support for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2012 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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// Change the current cursor.
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// Under X the cursor is attached to the X window. I tried to hide
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// this and pretend that changing the cursor is a drawing function.
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// This avoids a field in the Fl_Window, and I suspect is more
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// portable to other systems.
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#include <FL/Fl.H>
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#include <FL/Fl_Window.H>
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#include <FL/x.H>
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#if !defined(WIN32) && !defined(__APPLE__)
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# include <X11/cursorfont.h>
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#endif
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#include <FL/fl_draw.H>
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/**
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Sets the cursor for the current window to the specified shape and colors.
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The cursors are defined in the <FL/Enumerations.H> header file.
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*/
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void fl_cursor(Fl_Cursor c, Fl_Color fg, Fl_Color bg) {
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if (Fl::first_window()) Fl::first_window()->cursor(c,fg,bg);
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}
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/**
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Sets the default window cursor as well as its color.
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For back compatibility only.
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*/
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void Fl_Window::default_cursor(Fl_Cursor c, Fl_Color fg, Fl_Color bg) {
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// if (c == FL_CURSOR_DEFAULT) c = FL_CURSOR_ARROW;
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cursor_default = c;
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cursor_fg = fg;
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cursor_bg = bg;
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cursor(c, fg, bg);
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}
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#ifdef WIN32
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# ifndef IDC_HAND
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# define IDC_HAND MAKEINTRESOURCE(32649)
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# endif // !IDC_HAND
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void Fl_Window::cursor(Fl_Cursor c, Fl_Color c1, Fl_Color c2) {
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if (!shown()) return;
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// the cursor must be set for the top level window, not for subwindows
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Fl_Window *w = window(), *toplevel = this;
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while (w) { toplevel = w; w = w->window(); }
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if (toplevel != this) { toplevel->cursor(c, c1, c2); return; }
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// now set the actual cursor
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if (c == FL_CURSOR_DEFAULT) {
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c = cursor_default;
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}
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if (c > FL_CURSOR_NESW) {
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i->cursor = 0;
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} else if (c == FL_CURSOR_DEFAULT) {
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i->cursor = fl_default_cursor;
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} else {
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LPSTR n;
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switch (c) {
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case FL_CURSOR_ARROW: n = IDC_ARROW; break;
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case FL_CURSOR_CROSS: n = IDC_CROSS; break;
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case FL_CURSOR_WAIT: n = IDC_WAIT; break;
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case FL_CURSOR_INSERT: n = IDC_IBEAM; break;
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case FL_CURSOR_HELP: n = IDC_HELP; break;
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case FL_CURSOR_HAND: {
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OSVERSIONINFO osvi;
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// Get the OS version: Windows 98 and 2000 have a standard
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// hand cursor.
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memset(&osvi, 0, sizeof(OSVERSIONINFO));
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osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx(&osvi);
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if (osvi.dwMajorVersion > 4 ||
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(osvi.dwMajorVersion == 4 && osvi.dwMinorVersion > 0 &&
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osvi.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)) n = IDC_HAND;
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else n = IDC_UPARROW;
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} break;
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case FL_CURSOR_MOVE: n = IDC_SIZEALL; break;
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case FL_CURSOR_N:
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case FL_CURSOR_S:
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case FL_CURSOR_NS: n = IDC_SIZENS; break;
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case FL_CURSOR_NE:
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case FL_CURSOR_SW:
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case FL_CURSOR_NESW: n = IDC_SIZENESW; break;
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case FL_CURSOR_E:
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case FL_CURSOR_W:
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case FL_CURSOR_WE: n = IDC_SIZEWE; break;
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case FL_CURSOR_SE:
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case FL_CURSOR_NW:
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case FL_CURSOR_NWSE: n = IDC_SIZENWSE; break;
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default: n = IDC_NO; break;
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}
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i->cursor = LoadCursor(NULL, n);
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}
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SetCursor(i->cursor);
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}
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#elif defined(__APPLE__)
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#ifdef __BIG_ENDIAN__
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# define E(x) x
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#elif defined __LITTLE_ENDIAN__
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// Don't worry. This will be resolved at compile time
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# define E(x) (x>>8)|((x<<8)&0xff00)
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#else
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# error "Either __LITTLE_ENDIAN__ or __BIG_ENDIAN__ must be defined"
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#endif
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CGContextRef Fl_X::help_cursor_image(void)
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{
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int w = 20, h = 20;
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Fl_Offscreen off = Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha(w, h);
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fl_begin_offscreen(off);
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CGContextSetRGBFillColor( (CGContextRef)off, 0,0,0,0);
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fl_rectf(0,0,w,h);
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fl_color(FL_BLACK);
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fl_font(FL_COURIER_BOLD, 20);
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fl_draw("?", 1, h-1);
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fl_end_offscreen();
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return (CGContextRef)off;
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}
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CGContextRef Fl_X::none_cursor_image(void)
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{
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int w = 20, h = 20;
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Fl_Offscreen off = Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha(w, h);
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fl_begin_offscreen(off);
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CGContextSetRGBFillColor( (CGContextRef)off, 0,0,0,0);
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fl_rectf(0,0,w,h);
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fl_end_offscreen();
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return (CGContextRef)off;
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}
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CGContextRef Fl_X::watch_cursor_image(void)
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{
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int w, h, r = 5;
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w = 2*r+6;
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h = 4*r;
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Fl_Offscreen off = Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha(w, h);
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fl_begin_offscreen(off);
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CGContextSetRGBFillColor( (CGContextRef)off, 0,0,0,0);
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fl_rectf(0,0,w,h);
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CGContextTranslateCTM( (CGContextRef)off, w/2, h/2);
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fl_color(FL_WHITE);
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fl_circle(0, 0, r+1);
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fl_color(FL_BLACK);
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fl_rectf(int(-r*0.7), int(-r*1.7), int(1.4*r), int(3.4*r));
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fl_rectf(r-1, -1, 3, 3);
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fl_color(FL_WHITE);
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fl_pie(-r, -r, 2*r, 2*r, 0, 360);
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fl_color(FL_BLACK);
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fl_circle(0,0,r);
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fl_xyline(0, 0, int(-r*.7));
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fl_xyline(0, 0, 0, int(-r*.7));
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fl_end_offscreen();
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return (CGContextRef)off;
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}
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CGContextRef Fl_X::nesw_cursor_image(void)
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{
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int c = 7, r = 2*c;
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int w = r, h = r;
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Fl_Offscreen off = Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha(w, h);
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fl_begin_offscreen(off);
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CGContextSetRGBFillColor( (CGContextRef)off, 0,0,0,0);
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fl_rectf(0,0,w,h);
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CGContextTranslateCTM( (CGContextRef)off, 0, h);
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CGContextScaleCTM( (CGContextRef)off, 1, -1);
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fl_color(FL_BLACK);
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fl_polygon(0, 0, c, 0, 0, c);
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fl_polygon(r, r, r, r-c, r-c, r);
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fl_line_style(FL_SOLID, 2, 0);
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fl_line(0,1, r,r+1);
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fl_line_style(FL_SOLID, 0, 0);
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fl_end_offscreen();
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return (CGContextRef)off;
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}
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CGContextRef Fl_X::nwse_cursor_image(void)
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{
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int c = 7, r = 2*c;
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int w = r, h = r;
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Fl_Offscreen off = Fl_Quartz_Graphics_Driver::create_offscreen_with_alpha(w, h);
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fl_begin_offscreen(off);
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CGContextSetRGBFillColor( (CGContextRef)off, 0,0,0,0);
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fl_rectf(0,0,w,h);
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CGContextTranslateCTM( (CGContextRef)off, 0, h);
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CGContextScaleCTM( (CGContextRef)off, 1, -1);
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fl_color(FL_BLACK);
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fl_polygon(r-1, 0, r-1, c, r-1-c, 0);
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fl_polygon(-1, r, c-1, r, -1, r-c);
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fl_line_style(FL_SOLID, 2, 0);
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fl_line(r-1,1, -1,r+1);
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fl_line_style(FL_SOLID, 0, 0);
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fl_end_offscreen();
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return (CGContextRef)off;
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}
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void Fl_Window::cursor(Fl_Cursor c, Fl_Color, Fl_Color) {
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if (c == FL_CURSOR_DEFAULT) {
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c = cursor_default;
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}
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if (i) i->set_cursor(c);
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}
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#else
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// I like the MSWindows resize cursors, so I duplicate them here:
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#define CURSORSIZE 16
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#define HOTXY 7
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static struct TableEntry {
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uchar bits[CURSORSIZE*CURSORSIZE/8];
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uchar mask[CURSORSIZE*CURSORSIZE/8];
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Cursor cursor;
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} table[] = {
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{{ // FL_CURSOR_NS
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0x00, 0x00, 0x80, 0x01, 0xc0, 0x03, 0xe0, 0x07, 0x80, 0x01, 0x80, 0x01,
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0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01, 0x80, 0x01,
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0xe0, 0x07, 0xc0, 0x03, 0x80, 0x01, 0x00, 0x00},
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{
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0x80, 0x01, 0xc0, 0x03, 0xe0, 0x07, 0xf0, 0x0f, 0xf0, 0x0f, 0xc0, 0x03,
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0xc0, 0x03, 0xc0, 0x03, 0xc0, 0x03, 0xc0, 0x03, 0xc0, 0x03, 0xf0, 0x0f,
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0xf0, 0x0f, 0xe0, 0x07, 0xc0, 0x03, 0x80, 0x01}},
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{{ // FL_CURSOR_EW
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x10,
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0x0c, 0x30, 0xfe, 0x7f, 0xfe, 0x7f, 0x0c, 0x30, 0x08, 0x10, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x1c, 0x38,
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0xfe, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x7f, 0x1c, 0x38, 0x18, 0x18,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},
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{{ // FL_CURSOR_NWSE
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x38, 0x00, 0x78, 0x00,
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0xe8, 0x00, 0xc0, 0x01, 0x80, 0x03, 0x00, 0x17, 0x00, 0x1e, 0x00, 0x1c,
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0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{
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0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0xfc, 0x00, 0x7c, 0x00, 0xfc, 0x00,
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0xfc, 0x01, 0xec, 0x03, 0xc0, 0x37, 0x80, 0x3f, 0x00, 0x3f, 0x00, 0x3e,
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0x00, 0x3f, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x00}},
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{{ // FL_CURSOR_NESW
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x1c, 0x00, 0x1e,
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0x00, 0x17, 0x80, 0x03, 0xc0, 0x01, 0xe8, 0x00, 0x78, 0x00, 0x38, 0x00,
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0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{
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0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x00, 0x3f, 0x00, 0x3e, 0x00, 0x3f,
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0x80, 0x3f, 0xc0, 0x37, 0xec, 0x03, 0xfc, 0x01, 0xfc, 0x00, 0x7c, 0x00,
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0xfc, 0x00, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00}},
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{{0}, {0}} // FL_CURSOR_NONE & unknown
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};
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void Fl_Window::cursor(Fl_Cursor c, Fl_Color fg, Fl_Color bg) {
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if (!shown()) return;
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Cursor xc;
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int deleteit = 0;
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if (c == FL_CURSOR_DEFAULT) {
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c = cursor_default;
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fg = cursor_fg;
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bg = cursor_bg;
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}
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if (!c) {
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xc = None;
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} else {
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if (c >= FL_CURSOR_NS) {
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TableEntry *q = (c > FL_CURSOR_NESW) ? table+4 : table+(c-FL_CURSOR_NS);
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if (!(q->cursor)) {
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XColor dummy = { 0 };
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Pixmap p = XCreateBitmapFromData(fl_display,
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RootWindow(fl_display, fl_screen), (const char*)(q->bits),
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CURSORSIZE, CURSORSIZE);
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Pixmap m = XCreateBitmapFromData(fl_display,
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RootWindow(fl_display, fl_screen), (const char*)(q->mask),
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CURSORSIZE, CURSORSIZE);
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q->cursor = XCreatePixmapCursor(fl_display, p,m,&dummy, &dummy,
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HOTXY, HOTXY);
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XFreePixmap(fl_display, m);
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XFreePixmap(fl_display, p);
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}
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xc = q->cursor;
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} else {
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xc = XCreateFontCursor(fl_display, (c-1)*2);
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deleteit = 1;
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}
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XColor fgc;
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uchar r,g,b;
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Fl::get_color(fg,r,g,b);
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fgc.red = r<<8; fgc.green = g<<8; fgc.blue = b<<8;
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XColor bgc;
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Fl::get_color(bg,r,g,b);
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bgc.red = r<<8; bgc.green = g<<8; bgc.blue = b<<8;
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XRecolorCursor(fl_display, xc, &fgc, &bgc);
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}
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XDefineCursor(fl_display, fl_xid(this), xc);
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if (deleteit) XFreeCursor(fl_display, xc);
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}
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#endif
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//
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// End of "$Id$".
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//
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