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osr: win: Implement page scroll mode (fixes #3849)

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This commit is contained in:
Andrew Kurushin
2024-12-04 11:25:10 -05:00
committed by Marshall Greenblatt
parent 189b247282
commit 2dd1d1f94b
5 changed files with 28 additions and 9 deletions
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16
tests/cefclient/browser/osr_window_win.cc
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@@ -743,6 +743,8 @@ void OsrWindowWin::OnMouseEvent(UINT message, WPARAM wParam, LPARAM lParam) {
ScreenToClient(hwnd_, &screen_point);
int delta = GET_WHEEL_DELTA_WPARAM(wParam);
int deltaX = IsKeyDown(VK_SHIFT) ? delta : 0;
int deltaY = !IsKeyDown(VK_SHIFT) ? delta : 0;
CefMouseEvent mouse_event;
mouse_event.x = screen_point.x;
@@ -750,9 +752,17 @@ void OsrWindowWin::OnMouseEvent(UINT message, WPARAM wParam, LPARAM lParam) {
ApplyPopupOffset(mouse_event.x, mouse_event.y);
DeviceToLogical(mouse_event, device_scale_factor_);
mouse_event.modifiers = GetCefMouseModifiers(wParam);
browser_host->SendMouseWheelEvent(mouse_event,
IsKeyDown(VK_SHIFT) ? delta : 0,
!IsKeyDown(VK_SHIFT) ? delta : 0);
UINT sys_info_lines;
if (SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &sys_info_lines,
0) &&
sys_info_lines == WHEEL_PAGESCROLL) {
mouse_event.modifiers |= EVENTFLAG_SCROLL_BY_PAGE;
deltaX = 0;
deltaY = (delta > 0) ? 1 : -1;
}
browser_host->SendMouseWheelEvent(mouse_event, deltaX, deltaY);
}
break;
}