wine/objects/linedda.c
Alexandre Julliard 670cdc45be Release 970824
Sat Aug 23 00:05:23 1997  Andreas Mohr <100.30936@germany.net>

	* [if1632/kernel.spec] [if1632/mmsystem.spec]
	Added some stubs.

	* [include/neexe.h] [loader/module.c]
	Added warning for OS/2 executables.

	* [multimedia/midi.c]
	Shortened MIDIOUT driver version string to be less than 31 chars.

	* [objects/gdiobj.c]
	Fixed DeleteObject32() to react properly when called with stock object.

Fri Aug 22 18:03:26 1997  Dimitrie O. Paun <dimi@cs.toronto.edu>

	* [controls/updown.c] [include/updown.h]
	First attempt at implementiong the UpDown class.

	* [controls/widgets.c]
	Added the UpDown class to be initialized by InitCommonControls().

Wed Aug 20 18:01:33 1997  Doug Ridgway <ridgway@routh.UCSD.EDU>

	* [graphics/*] [objects/*] [include/gdi.h]
	Made all GDI objects (except DCs) moveable.

Mon Aug 18 03:25:30 1997  Alex Korobka <alex@trantor.pharm.sunysb.edu>

	* [windows/event.c] [misc/winsock.c] [misc/winsock_dns.c]
	Removed IPC communication to speed up winsock services
	(tested only with 16-bit netscape 3.03).

	* [graphics/x11drv/xfont.c] [documentation/fonts]
	Miscellaneous improvements. Updated docs.

Sun Aug 17 20:39:55 1997  Ingo Schneider <schneidi@informatik.tu-muenchen.de>

	* [misc/comm.c]
	A couple of bug fixes.

Sun Aug 17 19:29:22 1997  Alexandre Julliard  <julliard@lrc.epfl.ch>

	* [debugger/dbg.y]
	Display next instruction after stepi/nexti.

	* [if1632/relay.c] [include/callback.h] [tools/build.c]
	Replaced CallTo32_LargeStack with the CALL_LARGE_STACK macro for
	better Winelib support.

	* [include/sigcontext.h]
	Renamed to sig_context.h to avoid conflicts with libc.

	* [*/*]
	All API functions are now prefixed with WINAPI in prevision of
	future Winelib integration.

	* [loader/signal.c] [memory/ldt.c]
	Fixed assembly code to be -fPIC compatible.

Thu Aug 14 14:38:15 1997  Marcus Meissner <msmeissn@cip.informatik.uni-erlangen.de>

	* [if1632/crtdll.spec][win32/except.c]
	_global_unwind, _local_unwind stub added.

	* [objects/dib.c]	
	Don't read memory you don't even need for the target bitmap (fixes
	one 'lazy' program).

	* [if1632/relay.c][if1632/thunk.c][if1632/kernel32.spec]
	  [win32/ordinals.c][memory/selector.c][memory/global.c]
	  [include/callback.h]
	Added/moved some more win95 ordinal stuff. Implemented QT_Thunk
	(not 100% correct yet) and some friends.

	* [loader/pe_image.c]
	Add possibility to break at the DLL entrypoint.

	* [controls/static.c][misc/commdlg.c][scheduler/thread.c]
	Misc bugfixes and additions.

	* [misc/registry.c]
	The registry seems to be case-preserving but case-insensitive.

	* [memory/global.c]	
	Adapted to new /proc/meminfo format.

	* [objects/font.c][graphics/x11drv/xfont.c]
	FONT_SelectObject and GetTextMetrics* get passed ranges in logical
 	and not device points (thanks to Marion Reyzl for pointing this
 	out).

	* [windows/caret.c]
	Use the windows own DC if present (The caret coordinates are
	logical coordinates based on it). Fixes another AMIPRO problem.

Wed Aug  6 18:22:22 1997  Morten Welinder  <terra@diku.dk>

	* [controls/menu.c]
	General clean-up and Win32 work: split item_flags into fType and
	fState; split item_id into wID and hSubMenu.  Improved
	debug-printing.  Implemented InsertMenuItem32[AW],
	SetMenuDefaultItem32, and SetMenuItemInfo32[AW].  Fixed
	GetMenuItemInfo32[AW].

	* [if1632/user32.spec]
	Define above new functions.

	* [include/windows.h]
	Define MF_DEFAULT and MF_RIGHTJUSTIFY.  Prototype above functions.

	* [include/menu.h]
	Don't prototype now-static MENU_InitSysMenuPopup.

	* [include/comm.h]
	Reduce MAX_PORTS to 9 (which the profile code can handle).

Tue Aug  5 20:16:22 1997  Victor Schneider <vischne@ibm.net>

	* [library/winestub.c] [libtest/expand.c]
	These patches let people porting Windows apps compile them using
	the same conventions regarding global _argc and _argv as those on
	Windows C/C++ compilers.
1997-08-24 16:00:30 +00:00

67 lines
1.5 KiB
C

/*
* LineDDA
*
* Copyright 1993 Bob Amstadt
*/
#include <stdlib.h>
#include "windows.h"
/**********************************************************************
* LineDDA16 (GDI.100)
*/
void WINAPI LineDDA16( INT16 nXStart, INT16 nYStart, INT16 nXEnd, INT16 nYEnd,
LINEDDAPROC16 callback, LPARAM lParam )
{
LineDDA32( nXStart, nYStart, nXEnd, nYEnd,
(LINEDDAPROC32)callback, lParam );
}
/**********************************************************************
* LineDDA32 (GDI32.248)
*/
BOOL32 WINAPI LineDDA32(INT32 nXStart, INT32 nYStart, INT32 nXEnd, INT32 nYEnd,
LINEDDAPROC32 callback, LPARAM lParam )
{
INT32 xadd = 1, yadd = 1;
INT32 err,erradd;
INT32 cnt;
INT32 dx = nXEnd - nXStart;
INT32 dy = nYEnd - nYStart;
if (dx < 0) {
dx = -dx; xadd = -1;
}
if (dy < 0) {
dy = -dy; yadd = -1;
}
if (dx > dy) { /* line is "more horizontal" */
err = 2*dy - dx; erradd = 2*dy - 2*dx;
for(cnt = 0;cnt <= dx; cnt++) {
callback(nXStart,nYStart,lParam);
if (err > 0) {
nYStart += yadd;
err += erradd;
} else {
err += 2*dy;
}
nXStart += xadd;
}
} else { /* line is "more vertical" */
err = 2*dx - dy; erradd = 2*dx - 2*dy;
for(cnt = 0;cnt <= dy; cnt++) {
callback(nXStart,nYStart,lParam);
if (err > 0) {
nXStart += xadd;
err += erradd;
} else {
err += 2*dx;
}
nYStart += yadd;
}
}
return TRUE;
}