c7432537b1
VGLMouseFreeze() now only defers mouse signals and leaves it to higher levels to hide and unhide the mouse cursor if necessary. (It is never necessary, but is done to simplify the implementation. It is slow and flashes the cursor. It is still done for copying bitmaps and clearing.) VGLMouseUnFreeze() now only undoes 1 level of freezing. Its old optimization to reduce mouse redrawing is too hard to do with unhiding in higher levels, and its undoing of multiple levels was a historical mistake. VGLMouseOverlap() determines if a region overlaps the (full) mouse region. VGLMouseFreezeXY() is the freezing and a precise overlap check combined for the special case of writing a single pixel. This is the single-pixel case of the old VGLMouseFreeze() with cleanups. Fixes: - check in more cases that the application didn't pass an invalid VIDBUF - check for errors from copying a bitmap to the shadow buffer - freeze the mouse before writing to the shadow buffer in all cases. This was not done for the case of writing a single pixel (there was a race) - don't spell the #defined values for VGLMouseShown as 0, 1 or boolean.
363 lines
10 KiB
C
363 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1991-1997 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/signal.h>
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#include <sys/consio.h>
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#include <sys/fbio.h>
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#include "vgl.h"
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#define BORDER 0xff /* default border -- light white in rgb 3:3:2 */
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#define INTERIOR 0xa0 /* default interior -- red in rgb 3:3:2 */
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#define X 0xff /* any nonzero in And mask means part of cursor */
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#define B BORDER
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#define I INTERIOR
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static byte StdAndMask[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE] = {
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X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,X,X,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,X,X,X,0,0,0,0,0,0,
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X,X,X,X,X,X,X,X,X,X,0,0,0,0,0,0,
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X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
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X,X,X,0,X,X,X,X,0,0,0,0,0,0,0,0,
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X,X,0,0,X,X,X,X,0,0,0,0,0,0,0,0,
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0,0,0,0,0,X,X,X,X,0,0,0,0,0,0,0,
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0,0,0,0,0,X,X,X,X,0,0,0,0,0,0,0,
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0,0,0,0,0,0,X,X,0,0,0,0,0,0,0,0,
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};
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static byte StdOrMask[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE] = {
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B,B,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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B,I,B,0,0,0,0,0,0,0,0,0,0,0,0,0,
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B,I,I,B,0,0,0,0,0,0,0,0,0,0,0,0,
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B,I,I,I,B,0,0,0,0,0,0,0,0,0,0,0,
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B,I,I,I,I,B,0,0,0,0,0,0,0,0,0,0,
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B,I,I,I,I,I,B,0,0,0,0,0,0,0,0,0,
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B,I,I,I,I,I,I,B,0,0,0,0,0,0,0,0,
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B,I,I,I,I,I,I,I,B,0,0,0,0,0,0,0,
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B,I,I,I,I,I,I,I,I,B,0,0,0,0,0,0,
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B,I,I,I,I,I,B,B,B,B,0,0,0,0,0,0,
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B,I,I,B,I,I,B,0,0,0,0,0,0,0,0,0,
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B,I,B,0,B,I,I,B,0,0,0,0,0,0,0,0,
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B,B,0,0,B,I,I,B,0,0,0,0,0,0,0,0,
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0,0,0,0,0,B,I,I,B,0,0,0,0,0,0,0,
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0,0,0,0,0,B,I,I,B,0,0,0,0,0,0,0,
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0,0,0,0,0,0,B,B,0,0,0,0,0,0,0,0,
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};
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#undef X
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#undef B
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#undef I
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static VGLBitmap VGLMouseStdAndMask =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, StdAndMask);
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static VGLBitmap VGLMouseStdOrMask =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, StdOrMask);
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static VGLBitmap *VGLMouseAndMask, *VGLMouseOrMask;
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static int VGLMouseVisible = 0;
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static int VGLMouseShown = VGL_MOUSEHIDE;
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static int VGLMouseXpos = 0;
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static int VGLMouseYpos = 0;
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static int VGLMouseButtons = 0;
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static volatile sig_atomic_t VGLMintpending;
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static volatile sig_atomic_t VGLMsuppressint;
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#define INTOFF() (VGLMsuppressint++)
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#define INTON() do { \
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if (--VGLMsuppressint == 0 && VGLMintpending) \
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VGLMouseAction(0); \
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} while (0)
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void
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VGLMousePointerShow()
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{
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byte buf[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*4];
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VGLBitmap buffer =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, buf);
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byte crtcidx, crtcval, gdcidx, gdcval;
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int pos;
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if (!VGLMouseVisible) {
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INTOFF();
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VGLMouseVisible = 1;
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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crtcidx = inb(0x3c4);
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crtcval = inb(0x3c5);
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gdcidx = inb(0x3ce);
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gdcval = inb(0x3cf);
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}
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buffer.PixelBytes = VGLDisplay->PixelBytes;
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__VGLBitmapCopy(&VGLVDisplay, VGLMouseXpos, VGLMouseYpos,
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&buffer, 0, 0, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
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for (pos = 0; pos < MOUSE_IMG_SIZE*MOUSE_IMG_SIZE; pos++)
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if (VGLMouseAndMask->Bitmap[pos])
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bcopy(&VGLMouseOrMask->Bitmap[pos*VGLDisplay->PixelBytes],
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&buffer.Bitmap[pos*VGLDisplay->PixelBytes],
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VGLDisplay->PixelBytes);
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__VGLBitmapCopy(&buffer, 0, 0, VGLDisplay,
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VGLMouseXpos, VGLMouseYpos, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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outb(0x3c4, crtcidx);
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outb(0x3c5, crtcval);
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outb(0x3ce, gdcidx);
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outb(0x3cf, gdcval);
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}
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INTON();
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}
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}
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void
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VGLMousePointerHide()
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{
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byte crtcidx, crtcval, gdcidx, gdcval;
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if (VGLMouseVisible) {
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INTOFF();
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VGLMouseVisible = 0;
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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crtcidx = inb(0x3c4);
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crtcval = inb(0x3c5);
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gdcidx = inb(0x3ce);
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gdcval = inb(0x3cf);
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}
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__VGLBitmapCopy(&VGLVDisplay, VGLMouseXpos, VGLMouseYpos, VGLDisplay,
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VGLMouseXpos, VGLMouseYpos, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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outb(0x3c4, crtcidx);
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outb(0x3c5, crtcval);
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outb(0x3ce, gdcidx);
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outb(0x3cf, gdcval);
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}
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INTON();
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}
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}
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void
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VGLMouseMode(int mode)
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{
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if (mode == VGL_MOUSESHOW) {
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if (VGLMouseShown == VGL_MOUSEHIDE) {
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VGLMousePointerShow();
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VGLMouseShown = VGL_MOUSESHOW;
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}
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}
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else {
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if (VGLMouseShown == VGL_MOUSESHOW) {
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VGLMousePointerHide();
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VGLMouseShown = VGL_MOUSEHIDE;
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}
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}
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}
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void
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VGLMouseAction(int dummy)
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{
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struct mouse_info mouseinfo;
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if (VGLMsuppressint) {
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VGLMintpending = 1;
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return;
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}
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again:
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INTOFF();
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VGLMintpending = 0;
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mouseinfo.operation = MOUSE_GETINFO;
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ioctl(0, CONS_MOUSECTL, &mouseinfo);
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerHide();
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VGLMouseXpos = mouseinfo.u.data.x;
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VGLMouseYpos = mouseinfo.u.data.y;
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VGLMouseButtons = mouseinfo.u.data.buttons;
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerShow();
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/*
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* Loop to handle any new (suppressed) signals. This is INTON() without
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* recursion. !SA_RESTART prevents recursion in signal handling. So the
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* maximum recursion is 2 levels.
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*/
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VGLMsuppressint = 0;
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if (VGLMintpending)
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goto again;
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}
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void
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VGLMouseSetImage(VGLBitmap *AndMask, VGLBitmap *OrMask)
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{
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerHide();
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VGLMouseAndMask = AndMask;
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if (VGLMouseOrMask != NULL) {
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free(VGLMouseOrMask->Bitmap);
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free(VGLMouseOrMask);
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}
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VGLMouseOrMask = VGLBitmapCreate(MEMBUF, OrMask->VXsize, OrMask->VYsize, 0);
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VGLBitmapAllocateBits(VGLMouseOrMask);
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VGLBitmapCvt(OrMask, VGLMouseOrMask);
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerShow();
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}
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void
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VGLMouseSetStdImage()
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{
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VGLMouseSetImage(&VGLMouseStdAndMask, &VGLMouseStdOrMask);
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}
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int
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VGLMouseInit(int mode)
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{
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struct mouse_info mouseinfo;
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int andmask, border, error, i, interior;
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switch (VGLModeInfo.vi_mem_model) {
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case V_INFO_MM_PACKED:
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case V_INFO_MM_PLANAR:
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andmask = 0x0f;
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border = 0x0f;
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interior = 0x04;
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break;
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case V_INFO_MM_VGAX:
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andmask = 0x3f;
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border = 0x3f;
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interior = 0x24;
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break;
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default:
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andmask = 0xff;
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border = BORDER;
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interior = INTERIOR;
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break;
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}
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if (VGLModeInfo.vi_mode == M_BG640x480)
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border = 0; /* XXX (palette makes 0x04 look like 0x0f) */
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if (getenv("VGLMOUSEBORDERCOLOR") != NULL)
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border = strtoul(getenv("VGLMOUSEBORDERCOLOR"), NULL, 0);
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if (getenv("VGLMOUSEINTERIORCOLOR") != NULL)
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interior = strtoul(getenv("VGLMOUSEINTERIORCOLOR"), NULL, 0);
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for (i = 0; i < MOUSE_IMG_SIZE*MOUSE_IMG_SIZE; i++)
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VGLMouseStdOrMask.Bitmap[i] = VGLMouseStdOrMask.Bitmap[i] == BORDER ?
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border : VGLMouseStdOrMask.Bitmap[i] == INTERIOR ? interior : 0;
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VGLMouseSetStdImage();
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mouseinfo.operation = MOUSE_MODE;
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mouseinfo.u.mode.signal = SIGUSR2;
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if ((error = ioctl(0, CONS_MOUSECTL, &mouseinfo)))
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return error;
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signal(SIGUSR2, VGLMouseAction);
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mouseinfo.operation = MOUSE_GETINFO;
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ioctl(0, CONS_MOUSECTL, &mouseinfo);
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VGLMouseXpos = mouseinfo.u.data.x;
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VGLMouseYpos = mouseinfo.u.data.y;
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VGLMouseButtons = mouseinfo.u.data.buttons;
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VGLMouseMode(mode);
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return 0;
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}
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void
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VGLMouseRestore(void)
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{
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struct mouse_info mouseinfo;
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INTOFF();
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mouseinfo.operation = MOUSE_GETINFO;
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if (ioctl(0, CONS_MOUSECTL, &mouseinfo) == 0) {
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mouseinfo.operation = MOUSE_MOVEABS;
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mouseinfo.u.data.x = VGLMouseXpos;
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mouseinfo.u.data.y = VGLMouseYpos;
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ioctl(0, CONS_MOUSECTL, &mouseinfo);
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}
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INTON();
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}
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int
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VGLMouseStatus(int *x, int *y, char *buttons)
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{
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INTOFF();
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*x = VGLMouseXpos;
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*y = VGLMouseYpos;
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*buttons = VGLMouseButtons;
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INTON();
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return VGLMouseShown;
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}
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void
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VGLMouseFreeze(void)
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{
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INTOFF();
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}
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int
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VGLMouseFreezeXY(int x, int y)
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{
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INTOFF();
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if (VGLMouseShown != VGL_MOUSESHOW)
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return 0;
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if (x >= VGLMouseXpos && x < VGLMouseXpos + MOUSE_IMG_SIZE &&
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y >= VGLMouseYpos && y < VGLMouseYpos + MOUSE_IMG_SIZE &&
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VGLMouseAndMask->Bitmap[(y-VGLMouseYpos)*MOUSE_IMG_SIZE+(x-VGLMouseXpos)])
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return 1;
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return 0;
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}
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int
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VGLMouseOverlap(int x, int y, int width, int hight)
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{
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int overlap;
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if (VGLMouseShown != VGL_MOUSESHOW)
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return 0;
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if (x > VGLMouseXpos)
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overlap = (VGLMouseXpos + MOUSE_IMG_SIZE) - x;
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else
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overlap = (x + width) - VGLMouseXpos;
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if (overlap <= 0)
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return 0;
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if (y > VGLMouseYpos)
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overlap = (VGLMouseYpos + MOUSE_IMG_SIZE) - y;
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else
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overlap = (y + hight) - VGLMouseYpos;
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return overlap > 0;
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}
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void
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VGLMouseUnFreeze()
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{
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INTON();
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}
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