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xserver/hw/xwin/winmultiwindowicons.c

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/*
*Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
*
*Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
*"Software"), to deal in the Software without restriction, including
*without limitation the rights to use, copy, modify, merge, publish,
*distribute, sublicense, and/or sell copies of the Software, and to
*permit persons to whom the Software is furnished to do so, subject to
*the following conditions:
*
*The above copyright notice and this permission notice shall be
*included in all copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
*EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
*MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
*NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
*ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
*CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
*WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*Except as contained in this notice, the name of the XFree86 Project
*shall not be used in advertising or otherwise to promote the sale, use
*or other dealings in this Software without prior written authorization
*from the XFree86 Project.
*
* Authors: Earle F. Philhower, III
*/
#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#ifndef WINVER
#define WINVER 0x0500
#endif
#include <limits.h>
#include <stdbool.h>
#include <X11/Xwindows.h>
#include <xcb/xcb.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_image.h>
#include <winsock2.h>
#include "winresource.h"
#include "winprefs.h"
#include "winmsg.h"
#include "winmultiwindowicons.h"
#include "winglobals.h"
/*
* global variables
*/
extern HINSTANCE g_hInstance;
/*
* Scale an X icon ZPixmap into a Windoze icon bitmap
*/
static void
winScaleXImageToWindowsIcon(int iconSize,
int effBPP,
int stride, xcb_image_t* pixmap, unsigned char *image)
{
int row, column, effXBPP, effXDepth;
unsigned char *outPtr;
unsigned char *iconData = 0;
int xStride;
float factX, factY;
int posX, posY;
unsigned char *ptr;
unsigned int zero;
unsigned int color;
effXBPP = pixmap->bpp;
if (pixmap->bpp == 15)
effXBPP = 16;
effXDepth = pixmap->depth;
if (pixmap->depth == 15)
effXDepth = 16;
xStride = pixmap->stride;
if (stride == 0 || xStride == 0) {
ErrorF("winScaleXBitmapToWindows - stride or xStride is zero. "
"Bailing.\n");
return;
}
/* Get icon data */
iconData = (unsigned char *) pixmap->data;
/* Keep aspect ratio */
factX = ((float) pixmap->width) / ((float) iconSize);
factY = ((float) pixmap->height) / ((float) iconSize);
if (factX > factY)
factY = factX;
else
factX = factY;
/* Out-of-bounds, fill icon with zero */
zero = 0;
for (row = 0; row < iconSize; row++) {
outPtr = image + stride * row;
for (column = 0; column < iconSize; column++) {
posX = factX * column;
posY = factY * row;
ptr = (unsigned char *) iconData + posY * xStride;
if (effXBPP == 1) {
ptr += posX / 8;
/* Out of X icon bounds, leave space blank */
if (posX >= pixmap->width || posY >= pixmap->height)
ptr = (unsigned char *) &zero;
if ((*ptr) & (1 << (posX & 7)))
switch (effBPP) {
case 32:
*(outPtr++) = 0;
case 24:
*(outPtr++) = 0;
case 16:
*(outPtr++) = 0;
case 8:
*(outPtr++) = 0;
break;
case 1:
outPtr[column / 8] &= ~(1 << (7 - (column & 7)));
break;
}
else
switch (effBPP) {
case 32:
*(outPtr++) = 255;
*(outPtr++) = 255;
*(outPtr++) = 255;
*(outPtr++) = 0;
break;
case 24:
*(outPtr++) = 255;
case 16:
*(outPtr++) = 255;
case 8:
*(outPtr++) = 255;
break;
case 1:
outPtr[column / 8] |= (1 << (7 - (column & 7)));
break;
}
}
else if (effXDepth == 24 || effXDepth == 32) {
ptr += posX * (effXBPP / 8);
/* Out of X icon bounds, leave space blank */
if (posX >= pixmap->width || posY >= pixmap->height)
ptr = (unsigned char *) &zero;
color = (((*ptr) << 16)
+ ((*(ptr + 1)) << 8)
+ ((*(ptr + 2)) << 0));
switch (effBPP) {
case 32:
*(outPtr++) = *(ptr++); /* b */
*(outPtr++) = *(ptr++); /* g */
*(outPtr++) = *(ptr++); /* r */
*(outPtr++) = (effXDepth == 32) ? *(ptr++) : 0x0; /* alpha */
break;
case 24:
*(outPtr++) = *(ptr++);
*(outPtr++) = *(ptr++);
*(outPtr++) = *(ptr++);
break;
case 16:
color = ((((*ptr) >> 2) << 10)
+ (((*(ptr + 1)) >> 2) << 5)
+ (((*(ptr + 2)) >> 2)));
*(outPtr++) = (color >> 8);
*(outPtr++) = (color & 255);
break;
case 8:
color = (((*ptr))) + (((*(ptr + 1)))) + (((*(ptr + 2))));
color /= 3;
*(outPtr++) = color;
break;
case 1:
if (color)
outPtr[column / 8] |= (1 << (7 - (column & 7)));
else
outPtr[column / 8] &= ~(1 << (7 - (column & 7)));
}
}
else if (effXDepth == 16) {
ptr += posX * (effXBPP / 8);
/* Out of X icon bounds, leave space blank */
if (posX >= pixmap->width || posY >= pixmap->height)
ptr = (unsigned char *) &zero;
color = ((*ptr) << 8) + (*(ptr + 1));
switch (effBPP) {
case 32:
*(outPtr++) = (color & 31) << 2;
*(outPtr++) = ((color >> 5) & 31) << 2;
*(outPtr++) = ((color >> 10) & 31) << 2;
*(outPtr++) = 0; /* resvd */
break;
case 24:
*(outPtr++) = (color & 31) << 2;
*(outPtr++) = ((color >> 5) & 31) << 2;
*(outPtr++) = ((color >> 10) & 31) << 2;
break;
case 16:
*(outPtr++) = *(ptr++);
*(outPtr++) = *(ptr++);
break;
case 8:
*(outPtr++) = (((color & 31)
+ ((color >> 5) & 31)
+ ((color >> 10) & 31)) / 3) << 2;
break;
case 1:
if (color)
outPtr[column / 8] |= (1 << (7 - (column & 7)));
else
outPtr[column / 8] &= ~(1 << (7 - (column & 7)));
break;
} /* end switch(effbpp) */
} /* end if effxbpp==16) */
} /* end for column */
} /* end for row */
}
static HICON
NetWMToWinIconAlpha(uint32_t * icon)
{
int width = icon[0];
int height = icon[1];
uint32_t *pixels = &icon[2];
HICON result;
HDC hdc = GetDC(NULL);
uint32_t *DIB_pixels;
ICONINFO ii;
BITMAPV4HEADER bmh = { sizeof(bmh) };
/* Define an ARGB pixel format used for Color+Alpha icons */
bmh.bV4Width = width;
bmh.bV4Height = -height; /* Invert the image */
bmh.bV4Planes = 1;
bmh.bV4BitCount = 32;
bmh.bV4V4Compression = BI_BITFIELDS;
bmh.bV4AlphaMask = 0xFF000000;
bmh.bV4RedMask = 0x00FF0000;
bmh.bV4GreenMask = 0x0000FF00;
bmh.bV4BlueMask = 0x000000FF;
ii.fIcon = TRUE;
ii.xHotspot = 0; /* ignored */
ii.yHotspot = 0; /* ignored */
ii.hbmColor = CreateDIBSection(hdc, (BITMAPINFO *) &bmh,
DIB_RGB_COLORS, (void **) &DIB_pixels, NULL,
0);
ReleaseDC(NULL, hdc);
if (!ii.hbmColor)
return NULL;
ii.hbmMask = CreateBitmap(width, height, 1, 1, NULL);
memcpy(DIB_pixels, pixels, height * width * 4);
/* CreateIconIndirect() traditionally required DDBitmaps */
/* Systems from WinXP accept 32-bit ARGB DIBitmaps with full 8-bit alpha support */
/* The icon is created with a DIB + empty DDB mask (an MS example does the same) */
result = CreateIconIndirect(&ii);
DeleteObject(ii.hbmColor);
DeleteObject(ii.hbmMask);
winDebug("NetWMToWinIconAlpha - %d x %d = %p\n", icon[0], icon[1], result);
return result;
}
static HICON
NetWMToWinIconThreshold(uint32_t * icon)
{
int width = icon[0];
int height = icon[1];
uint32_t *pixels = &icon[2];
int row, col;
HICON result;
ICONINFO ii;
HDC hdc = GetDC(NULL);
HDC xorDC = CreateCompatibleDC(hdc);
HDC andDC = CreateCompatibleDC(hdc);
ii.fIcon = TRUE;
ii.xHotspot = 0; /* ignored */
ii.yHotspot = 0; /* ignored */
ii.hbmColor = CreateCompatibleBitmap(hdc, width, height);
ii.hbmMask = CreateCompatibleBitmap(hdc, width, height);
ReleaseDC(NULL, hdc);
SelectObject(xorDC, ii.hbmColor);
SelectObject(andDC, ii.hbmMask);
for (row = 0; row < height; row++) {
for (col = 0; col < width; col++) {
if ((*pixels & 0xFF000000) > 31 << 24) { /* 31 alpha threshold, i.e. opaque above, transparent below */
SetPixelV(xorDC, col, row,
RGB(((char *) pixels)[2], ((char *) pixels)[1],
((char *) pixels)[0]));
SetPixelV(andDC, col, row, RGB(0, 0, 0)); /* black mask */
}
else {
SetPixelV(xorDC, col, row, RGB(0, 0, 0));
SetPixelV(andDC, col, row, RGB(255, 255, 255)); /* white mask */
}
pixels++;
}
}
DeleteDC(xorDC);
DeleteDC(andDC);
result = CreateIconIndirect(&ii);
DeleteObject(ii.hbmColor);
DeleteObject(ii.hbmMask);
winDebug("NetWMToWinIconThreshold - %d x %d = %p\n", icon[0], icon[1],
result);
return result;
}
static HICON
NetWMToWinIcon(int bpp, uint32_t * icon)
{
static bool hasIconAlphaChannel = FALSE;
static bool versionChecked = FALSE;
if (!versionChecked) {
OSVERSIONINFOEX osvi = { 0 };
ULONGLONG dwlConditionMask = 0;
osvi.dwOSVersionInfoSize = sizeof(osvi);
osvi.dwMajorVersion = 5;
osvi.dwMinorVersion = 1;
/* Windows versions later than XP have icon alpha channel support, 2000 does not */
VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION,
VER_GREATER_EQUAL);
VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION,
VER_GREATER_EQUAL);
hasIconAlphaChannel =
VerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION,
dwlConditionMask);
versionChecked = TRUE;
ErrorF("OS has icon alpha channel support: %s\n",
hasIconAlphaChannel ? "yes" : "no");
}
if (hasIconAlphaChannel && (bpp == 32))
return NetWMToWinIconAlpha(icon);
else
return NetWMToWinIconThreshold(icon);
}
/*
* Attempt to create a custom icon from the WM_HINTS bitmaps
*/
static
HICON
winXIconToHICON(xcb_connection_t *conn, xcb_window_t id, int iconSize)
{
unsigned char *mask, *image = NULL, *imageMask;
unsigned char *dst, *src;
int planes, bpp, i;
unsigned int biggest_size = 0;
HDC hDC;
ICONINFO ii;
xcb_icccm_wm_hints_t hints;
HICON hIcon = NULL;
uint32_t *biggest_icon = NULL;
static xcb_atom_t _XA_NET_WM_ICON;
static int generation;
uint32_t *icon, *icon_data = NULL;
unsigned long int size;
hDC = GetDC(GetDesktopWindow());
planes = GetDeviceCaps(hDC, PLANES);
bpp = GetDeviceCaps(hDC, BITSPIXEL);
ReleaseDC(GetDesktopWindow(), hDC);
/* Always prefer _NET_WM_ICON icons */
if (generation != serverGeneration) {
xcb_intern_atom_reply_t *atom_reply;
xcb_intern_atom_cookie_t atom_cookie;
const char *atomName = "_NET_WM_ICON";
generation = serverGeneration;
_XA_NET_WM_ICON = XCB_NONE;
atom_cookie = xcb_intern_atom(conn, 0, strlen(atomName), atomName);
atom_reply = xcb_intern_atom_reply(conn, atom_cookie, NULL);
if (atom_reply) {
_XA_NET_WM_ICON = atom_reply->atom;
free(atom_reply);
}
}
{
xcb_get_property_cookie_t cookie = xcb_get_property(conn, FALSE, id, _XA_NET_WM_ICON, XCB_ATOM_CARDINAL, 0L, INT_MAX);
xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, cookie, NULL);
if (reply &&
((icon_data = xcb_get_property_value(reply)) != NULL)) {
size = xcb_get_property_value_length(reply)/sizeof(uint32_t);
for (icon = icon_data; icon < &icon_data[size] && *icon;
icon = &icon[icon[0] * icon[1] + 2]) {
winDebug("winXIconToHICON: %u x %u NetIcon\n", icon[0], icon[1]);
/* Icon data size will overflow an int and thus is bigger than the
property can possibly be */
if ((INT_MAX/icon[0]) < icon[1]) {
winDebug("winXIconToHICON: _NET_WM_ICON icon data size overflow\n");
break;
}
/* Icon data size is bigger than amount of data remaining */
if (&icon[icon[0] * icon[1] + 2] > &icon_data[size]) {
winDebug("winXIconToHICON: _NET_WM_ICON data is malformed\n");
break;
}
/* Found an exact match to the size we require... */
if (icon[0] == iconSize && icon[1] == iconSize) {
winDebug("winXIconToHICON: selected %d x %d NetIcon\n",
iconSize, iconSize);
hIcon = NetWMToWinIcon(bpp, icon);
break;
}
/* Otherwise, find the biggest icon and let Windows scale the size */
else if (biggest_size < icon[0]) {
biggest_icon = icon;
biggest_size = icon[0];
}
}
if (!hIcon && biggest_icon) {
winDebug
("winXIconToHICON: selected %u x %u NetIcon for scaling to %d x %d\n",
biggest_icon[0], biggest_icon[1], iconSize, iconSize);
hIcon = NetWMToWinIcon(bpp, biggest_icon);
}
free(reply);
}
}
if (!hIcon) {
xcb_get_property_cookie_t wm_hints_cookie;
winDebug("winXIconToHICON: no suitable NetIcon\n");
wm_hints_cookie = xcb_icccm_get_wm_hints(conn, id);
if (xcb_icccm_get_wm_hints_reply(conn, wm_hints_cookie, &hints, NULL)) {
winDebug("winXIconToHICON: id 0x%x icon_pixmap hint 0x%x\n",
(unsigned int)id,
(unsigned int)hints.icon_pixmap);
if (hints.icon_pixmap) {
unsigned int width, height;
xcb_image_t *xImageIcon;
xcb_image_t *xImageMask = NULL;
xcb_get_geometry_cookie_t geom_cookie = xcb_get_geometry(conn, hints.icon_pixmap);
xcb_get_geometry_reply_t *geom_reply = xcb_get_geometry_reply(conn, geom_cookie, NULL);
if (geom_reply) {
width = geom_reply->width;
height = geom_reply->height;
xImageIcon = xcb_image_get(conn, hints.icon_pixmap,
0, 0, width, height,
0xFFFFFF, XCB_IMAGE_FORMAT_Z_PIXMAP);
winDebug("winXIconToHICON: id 0x%x icon Ximage 0x%p\n",
(unsigned int)id, xImageIcon);
if (hints.icon_mask)
xImageMask = xcb_image_get(conn, hints.icon_mask,
0, 0, width, height,
0xFFFFFFFF, XCB_IMAGE_FORMAT_Z_PIXMAP);
if (xImageIcon) {
int effBPP, stride, maskStride;
/* 15 BPP is really 16BPP as far as we care */
if (bpp == 15)
effBPP = 16;
else
effBPP = bpp;
/* Need 16-bit aligned rows for DDBitmaps */
stride = ((iconSize * effBPP + 15) & (~15)) / 8;
/* Mask is 1-bit deep */
maskStride = ((iconSize * 1 + 15) & (~15)) / 8;
image = malloc(stride * iconSize);
imageMask = malloc(stride * iconSize);
mask = malloc(maskStride * iconSize);
/* Default to a completely black mask */
memset(imageMask, 0, stride * iconSize);
memset(mask, 0, maskStride * iconSize);
winScaleXImageToWindowsIcon(iconSize, effBPP, stride,
xImageIcon, image);
if (xImageMask) {
winScaleXImageToWindowsIcon(iconSize, 1, maskStride,
xImageMask, mask);
winScaleXImageToWindowsIcon(iconSize, effBPP, stride,
xImageMask, imageMask);
}
/* Now we need to set all bits of the icon which are not masked */
/* on to 0 because Color is really an XOR, not an OR function */
dst = image;
src = imageMask;
for (i = 0; i < (stride * iconSize); i++)
if ((*(src++)))
*(dst++) = 0;
else
dst++;
ii.fIcon = TRUE;
ii.xHotspot = 0; /* ignored */
ii.yHotspot = 0; /* ignored */
/* Create Win32 mask from pixmap shape */
ii.hbmMask =
CreateBitmap(iconSize, iconSize, planes, 1, mask);
/* Create Win32 bitmap from pixmap */
ii.hbmColor =
CreateBitmap(iconSize, iconSize, planes, bpp, image);
/* Merge Win32 mask and bitmap into icon */
hIcon = CreateIconIndirect(&ii);
/* Release Win32 mask and bitmap */
DeleteObject(ii.hbmMask);
DeleteObject(ii.hbmColor);
/* Free X mask and bitmap */
free(mask);
free(image);
free(imageMask);
if (xImageMask)
xcb_image_destroy(xImageMask);
xcb_image_destroy(xImageIcon);
}
}
}
}
}
return hIcon;
}
/*
* Change the Windows window icon
*/
void
winUpdateIcon(HWND hWnd, xcb_connection_t *conn, xcb_window_t id, HICON hIconNew)
{
HICON hIcon, hIconSmall = NULL, hIconOld;
if (hIconNew)
{
/* Start with the icon from preferences, if any */
hIcon = hIconNew;
hIconSmall = hIconNew;
}
else
{
/* If we still need an icon, try and get the icon from WM_HINTS */
hIcon = winXIconToHICON(conn, id, GetSystemMetrics(SM_CXICON));
hIconSmall = winXIconToHICON(conn, id, GetSystemMetrics(SM_CXSMICON));
}
/* If we got the small, but not the large one swap them */
if (!hIcon && hIconSmall) {
hIcon = hIconSmall;
hIconSmall = NULL;
}
/* Set the large icon */
hIconOld = (HICON) SendMessage(hWnd, WM_SETICON, ICON_BIG, (LPARAM) hIcon);
/* Delete the old icon if its not the default */
winDestroyIcon(hIconOld);
/* Same for the small icon */
hIconOld =
(HICON) SendMessage(hWnd, WM_SETICON, ICON_SMALL, (LPARAM) hIconSmall);
winDestroyIcon(hIconOld);
}
void
winInitGlobalIcons(void)
{
int sm_cx = GetSystemMetrics(SM_CXICON);
int sm_cxsm = GetSystemMetrics(SM_CXSMICON);
/* Load default X icon in case it's not ready yet */
if (!g_hIconX) {
g_hIconX = winOverrideDefaultIcon(sm_cx);
g_hSmallIconX = winOverrideDefaultIcon(sm_cxsm);
}
if (!g_hIconX) {
g_hIconX = (HICON) LoadImage(g_hInstance,
MAKEINTRESOURCE(IDI_XWIN),
IMAGE_ICON,
GetSystemMetrics(SM_CXICON),
GetSystemMetrics(SM_CYICON), 0);
g_hSmallIconX = (HICON) LoadImage(g_hInstance,
MAKEINTRESOURCE(IDI_XWIN),
IMAGE_ICON,
GetSystemMetrics(SM_CXSMICON),
GetSystemMetrics(SM_CYSMICON),
LR_DEFAULTSIZE);
}
}
void
winSelectIcons(HICON * pIcon, HICON * pSmallIcon)
{
HICON hIcon, hSmallIcon;
winInitGlobalIcons();
/* Use default X icon */
hIcon = g_hIconX;
hSmallIcon = g_hSmallIconX;
if (pIcon)
*pIcon = hIcon;
if (pSmallIcon)
*pSmallIcon = hSmallIcon;
}
void
winDestroyIcon(HICON hIcon)
{
/* Delete the icon if its not one of the application defaults or an override */
if (hIcon &&
hIcon != g_hIconX &&
hIcon != g_hSmallIconX && !winIconIsOverride(hIcon))
DestroyIcon(hIcon);
}
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