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Added Snap-to-Screen Edge feature in the case of multiple monitors (patch by Adi Shavit)

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This commit is contained in:
Vadim Pisarevsky 2012-05-16 16:13:24 +00:00
parent 5f9e295adf
commit 00c30681bc
1 changed files with 36 additions and 3 deletions
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39
modules/highgui/src/window_w32.cpp
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@ -54,6 +54,9 @@
#include <stdio.h> #include <stdio.h>
#include <assert.h> #include <assert.h>
#define COMPILE_MULTIMON_STUBS // Required for multi-monitor support
#include <multimon.h>
#ifdef HAVE_OPENGL #ifdef HAVE_OPENGL
#include <memory> #include <memory>
#include <algorithm> #include <algorithm>
@ -1065,7 +1068,7 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
icvSetWindowLongPtr( hWnd, CV_USERDATA, window ); icvSetWindowLongPtr( hWnd, CV_USERDATA, window );
icvSetWindowLongPtr( mainhWnd, CV_USERDATA, window ); icvSetWindowLongPtr( mainhWnd, CV_USERDATA, window );
// Recalculate window position // Recalculate window pos
icvUpdateWindowPos( window ); icvUpdateWindowPos( window );
result = 1; result = 1;
@ -1633,7 +1636,7 @@ MainWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{ {
WINDOWPOS* pos = (WINDOWPOS*)lParam; WINDOWPOS* pos = (WINDOWPOS*)lParam;
// Update the toolbar position/size // Update the toolbar pos/size
if(window->toolbar.toolbar) if(window->toolbar.toolbar)
{ {
RECT rect; RECT rect;
@ -1647,6 +1650,36 @@ MainWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
break; break;
} }
case WM_WINDOWPOSCHANGING:
{
// Snap window to screen edges with multi-monitor support. // Adi Shavit
LPWINDOWPOS pos = (LPWINDOWPOS)lParam;
RECT rect;
GetWindowRect(window->frame, &rect);
HMONITOR hMonitor;
hMonitor = MonitorFromRect(&rect, MONITOR_DEFAULTTONEAREST);
MONITORINFO mi;
mi.cbSize = sizeof(mi);
GetMonitorInfo(hMonitor, &mi);
const int SNAP_DISTANCE = 15;
if (abs(pos->x - mi.rcMonitor.left) <= SNAP_DISTANCE)
pos->x = mi.rcMonitor.left; // snap to left edge
else
if (abs(pos->x + pos->cx - mi.rcMonitor.right) <= SNAP_DISTANCE)
pos->x = mi.rcMonitor.right - pos->cx; // snap to right edge
if (abs(pos->y - mi.rcMonitor.top) <= SNAP_DISTANCE)
pos->y = mi.rcMonitor.top; // snap to top edge
else
if (abs(pos->y + pos->cy - mi.rcMonitor.bottom) <= SNAP_DISTANCE)
pos->y = mi.rcMonitor.bottom - pos->cy; // snap to bottom edge
}
case WM_ACTIVATE: case WM_ACTIVATE:
if(LOWORD(wParam) == WA_ACTIVE || LOWORD(wParam) == WA_CLICKACTIVE) if(LOWORD(wParam) == WA_ACTIVE || LOWORD(wParam) == WA_CLICKACTIVE)
SetFocus(window->hwnd); SetFocus(window->hwnd);
@ -2199,7 +2232,7 @@ icvCreateTrackbar( const char* trackbar_name, const char* window_name,
SendMessage(window->toolbar.toolbar, TB_SETBUTTONINFO, SendMessage(window->toolbar.toolbar, TB_SETBUTTONINFO,
(WPARAM)tbs.idCommand, (LPARAM)&tbis); (WPARAM)tbs.idCommand, (LPARAM)&tbis);
/* Get button position */ /* Get button pos */
SendMessage(window->toolbar.toolbar, TB_GETITEMRECT, SendMessage(window->toolbar.toolbar, TB_GETITEMRECT,
(WPARAM)tbs.idCommand, (LPARAM)&rect); (WPARAM)tbs.idCommand, (LPARAM)&rect);