014ddcbce4
Reading of single pixels didn't look under the cursor. Copying of 1x1 bitmaps didn't look under the cursor for either reading or writing. Copying of larger bitmaps looked under the cursor for at most the destination. Copying of larger bitmaps looked under a garbage cursor (for the Display bitmap) when the destination is a MEMBUF. The results are not used, so this only wasted time and flickered the cursor. Writing of single pixels looked under a garbage cursor for MEMBUF destinations, as above except this clobbered the current cursor and didn't update the MEMBUF. Writing of single pixels is not implemented yet in depths > 8. Otherwise, writing of single pixels worked. It was the only working case for accessing pixels under the cursor. Clearing of MEMBUFs wasted time freezing the cursor in the Display bitmap. The fixes abuse the top bits in the color arg to the cursor freezing function to control the function. Also clear the top 8 bits so that applications can't clobber the control bits or create 256 aliases for every 24-bit pixel value in depth 32. Races fixed: Showing and hiding the cursor only tried to avoid races with the mouse event signal handler for internal operations. There are still many shorter races from not using volatile or sig_atomic_t for the variable to control this. This variable also controls freezes, and has more complicated states than before. The internal operation of unfreezing the cursor opened a race window by unsetting the signal/freeze variable before showing the cursor.
324 lines
9.4 KiB
C
324 lines
9.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1991-1997 Søren Schmidt
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/consio.h>
|
|
#include <sys/fbio.h>
|
|
#include "vgl.h"
|
|
|
|
#define X 0xff
|
|
static byte StdAndMask[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE] = {
|
|
X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,
|
|
X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,
|
|
X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
|
|
X,X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,
|
|
X,X,X,X,X,X,X,X,X,0,0,0,0,0,0,0,
|
|
X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,X,X,X,X,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,X,X,X,X,X,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,X,X,X,X,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,X,X,X,X,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
};
|
|
static byte StdOrMask[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE] = {
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,X,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,
|
|
0,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
|
|
0,X,X,0,X,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
|
|
};
|
|
#undef X
|
|
static VGLBitmap VGLMouseStdAndMask =
|
|
VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, StdAndMask);
|
|
static VGLBitmap VGLMouseStdOrMask =
|
|
VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, StdOrMask);
|
|
static VGLBitmap *VGLMouseAndMask, *VGLMouseOrMask;
|
|
static byte map[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*4];
|
|
static VGLBitmap VGLMouseSave =
|
|
VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, map);
|
|
static int VGLMouseVisible = 0;
|
|
static int VGLMouseFrozen = 0;
|
|
static int VGLMouseShown = 0;
|
|
static int VGLMouseXpos = 0;
|
|
static int VGLMouseYpos = 0;
|
|
static int VGLMouseButtons = 0;
|
|
|
|
void
|
|
VGLMousePointerShow()
|
|
{
|
|
byte buf[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*4];
|
|
VGLBitmap buffer =
|
|
VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, buf);
|
|
byte crtcidx, crtcval, gdcidx, gdcval;
|
|
int i, pos, pos1;
|
|
|
|
if (!VGLMouseVisible) {
|
|
VGLMouseFrozen++;
|
|
VGLMouseVisible = 1;
|
|
crtcidx = inb(0x3c4);
|
|
crtcval = inb(0x3c5);
|
|
gdcidx = inb(0x3ce);
|
|
gdcval = inb(0x3cf);
|
|
__VGLBitmapCopy(VGLDisplay, VGLMouseXpos, VGLMouseYpos,
|
|
&VGLMouseSave, 0, 0, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
|
|
bcopy(VGLMouseSave.Bitmap, buffer.Bitmap,
|
|
MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*VGLDisplay->PixelBytes);
|
|
for (pos = 0; pos < MOUSE_IMG_SIZE*MOUSE_IMG_SIZE; pos++)
|
|
for (i = 0; i < VGLDisplay->PixelBytes; i++) {
|
|
pos1 = pos * VGLDisplay->PixelBytes + i;
|
|
buffer.Bitmap[pos1] = (buffer.Bitmap[pos1] &
|
|
~VGLMouseAndMask->Bitmap[pos]) |
|
|
VGLMouseOrMask->Bitmap[pos];
|
|
}
|
|
__VGLBitmapCopy(&buffer, 0, 0, VGLDisplay,
|
|
VGLMouseXpos, VGLMouseYpos, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
|
|
outb(0x3c4, crtcidx);
|
|
outb(0x3c5, crtcval);
|
|
outb(0x3ce, gdcidx);
|
|
outb(0x3cf, gdcval);
|
|
VGLMouseFrozen--;
|
|
}
|
|
}
|
|
|
|
void
|
|
VGLMousePointerHide()
|
|
{
|
|
byte crtcidx, crtcval, gdcidx, gdcval;
|
|
|
|
if (VGLMouseVisible) {
|
|
VGLMouseFrozen++;
|
|
VGLMouseVisible = 0;
|
|
crtcidx = inb(0x3c4);
|
|
crtcval = inb(0x3c5);
|
|
gdcidx = inb(0x3ce);
|
|
gdcval = inb(0x3cf);
|
|
__VGLBitmapCopy(&VGLMouseSave, 0, 0, VGLDisplay,
|
|
VGLMouseXpos, VGLMouseYpos, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
|
|
outb(0x3c4, crtcidx);
|
|
outb(0x3c5, crtcval);
|
|
outb(0x3ce, gdcidx);
|
|
outb(0x3cf, gdcval);
|
|
VGLMouseFrozen--;
|
|
}
|
|
}
|
|
|
|
void
|
|
VGLMouseMode(int mode)
|
|
{
|
|
if (mode == VGL_MOUSESHOW) {
|
|
if (VGLMouseShown == VGL_MOUSEHIDE) {
|
|
VGLMousePointerShow();
|
|
VGLMouseShown = VGL_MOUSESHOW;
|
|
}
|
|
}
|
|
else {
|
|
if (VGLMouseShown == VGL_MOUSESHOW) {
|
|
VGLMousePointerHide();
|
|
VGLMouseShown = VGL_MOUSEHIDE;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
VGLMouseAction(int dummy)
|
|
{
|
|
struct mouse_info mouseinfo;
|
|
|
|
if (VGLMouseFrozen) {
|
|
VGLMouseFrozen += 8;
|
|
return;
|
|
}
|
|
mouseinfo.operation = MOUSE_GETINFO;
|
|
ioctl(0, CONS_MOUSECTL, &mouseinfo);
|
|
if (VGLMouseShown == VGL_MOUSESHOW)
|
|
VGLMousePointerHide();
|
|
VGLMouseXpos = mouseinfo.u.data.x;
|
|
VGLMouseYpos = mouseinfo.u.data.y;
|
|
VGLMouseButtons = mouseinfo.u.data.buttons;
|
|
if (VGLMouseShown == VGL_MOUSESHOW)
|
|
VGLMousePointerShow();
|
|
}
|
|
|
|
void
|
|
VGLMouseSetImage(VGLBitmap *AndMask, VGLBitmap *OrMask)
|
|
{
|
|
if (VGLMouseShown == VGL_MOUSESHOW)
|
|
VGLMousePointerHide();
|
|
VGLMouseAndMask = AndMask;
|
|
VGLMouseOrMask = OrMask;
|
|
if (VGLMouseShown == VGL_MOUSESHOW)
|
|
VGLMousePointerShow();
|
|
}
|
|
|
|
void
|
|
VGLMouseSetStdImage()
|
|
{
|
|
if (VGLMouseShown == VGL_MOUSESHOW)
|
|
VGLMousePointerHide();
|
|
VGLMouseAndMask = &VGLMouseStdAndMask;
|
|
VGLMouseOrMask = &VGLMouseStdOrMask;
|
|
if (VGLMouseShown == VGL_MOUSESHOW)
|
|
VGLMousePointerShow();
|
|
}
|
|
|
|
int
|
|
VGLMouseInit(int mode)
|
|
{
|
|
struct mouse_info mouseinfo;
|
|
int error, i, mask;
|
|
|
|
switch (VGLModeInfo.vi_mem_model) {
|
|
case V_INFO_MM_PACKED:
|
|
case V_INFO_MM_PLANAR:
|
|
mask = 0x0f;
|
|
break;
|
|
case V_INFO_MM_VGAX:
|
|
mask = 0x3f;
|
|
break;
|
|
default:
|
|
mask = 0xff;
|
|
break;
|
|
}
|
|
for (i = 0; i < 256; i++)
|
|
VGLMouseStdOrMask.Bitmap[i] &= mask;
|
|
VGLMouseSetStdImage();
|
|
mouseinfo.operation = MOUSE_MODE;
|
|
mouseinfo.u.mode.signal = SIGUSR2;
|
|
if ((error = ioctl(0, CONS_MOUSECTL, &mouseinfo)))
|
|
return error;
|
|
signal(SIGUSR2, VGLMouseAction);
|
|
mouseinfo.operation = MOUSE_GETINFO;
|
|
ioctl(0, CONS_MOUSECTL, &mouseinfo);
|
|
VGLMouseXpos = mouseinfo.u.data.x;
|
|
VGLMouseYpos = mouseinfo.u.data.y;
|
|
VGLMouseButtons = mouseinfo.u.data.buttons;
|
|
VGLMouseMode(mode);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
VGLMouseStatus(int *x, int *y, char *buttons)
|
|
{
|
|
signal(SIGUSR2, SIG_IGN);
|
|
*x = VGLMouseXpos;
|
|
*y = VGLMouseYpos;
|
|
*buttons = VGLMouseButtons;
|
|
signal(SIGUSR2, VGLMouseAction);
|
|
return VGLMouseShown;
|
|
}
|
|
|
|
int
|
|
VGLMouseFreeze(int x, int y, int width, int hight, u_long color)
|
|
{
|
|
int i, xstride, ystride;
|
|
|
|
VGLMouseFrozen++;
|
|
if (width > 1 || hight > 1 || (color & 0xc0000000) == 0) { /* bitmap */
|
|
if (VGLMouseShown == 1) {
|
|
int overlap;
|
|
|
|
if (x > VGLMouseXpos)
|
|
overlap = (VGLMouseXpos + MOUSE_IMG_SIZE) - x;
|
|
else
|
|
overlap = (x + width) - VGLMouseXpos;
|
|
if (overlap > 0) {
|
|
if (y > VGLMouseYpos)
|
|
overlap = (VGLMouseYpos + MOUSE_IMG_SIZE) - y;
|
|
else
|
|
overlap = (y + hight) - VGLMouseYpos;
|
|
if (overlap > 0)
|
|
VGLMousePointerHide();
|
|
}
|
|
}
|
|
}
|
|
else { /* bit */
|
|
if (VGLMouseShown &&
|
|
x >= VGLMouseXpos && x < VGLMouseXpos + MOUSE_IMG_SIZE &&
|
|
y >= VGLMouseYpos && y < VGLMouseYpos + MOUSE_IMG_SIZE) {
|
|
xstride = VGLDisplay->PixelBytes;
|
|
ystride = MOUSE_IMG_SIZE * xstride;
|
|
if (color & 0x40000000) { /* Get */
|
|
color = 0;
|
|
for (i = xstride - 1; i >= 0; i--)
|
|
color = (color << 8) |
|
|
VGLMouseSave.Bitmap[(y-VGLMouseYpos)*ystride+
|
|
(x-VGLMouseXpos)*xstride+i];
|
|
return 0x40000000 | (color & 0xffffff);
|
|
} else { /* Set */
|
|
color &= 0xffffff; /* discard flag and other garbage */
|
|
for (i = 0; i < xstride; i++, color >>= 8)
|
|
VGLMouseSave.Bitmap[(y-VGLMouseYpos)*ystride+
|
|
(x-VGLMouseXpos)*xstride+i] = color;
|
|
if (VGLMouseAndMask->Bitmap
|
|
[(y-VGLMouseYpos)*MOUSE_IMG_SIZE+(x-VGLMouseXpos)]) {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
VGLMouseUnFreeze()
|
|
{
|
|
if (VGLMouseFrozen > 8) {
|
|
VGLMouseFrozen = 0;
|
|
VGLMouseAction(0);
|
|
}
|
|
else {
|
|
if (VGLMouseShown == VGL_MOUSESHOW && !VGLMouseVisible)
|
|
VGLMousePointerShow();
|
|
VGLMouseFrozen = 0;
|
|
}
|
|
}
|