fix: restore original bounds after CenterWindow clamps to primary display OS-21449#141
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…play OS-21449 When creating a frameless BrowserWindow spanning multiple displays (e.g. 3840x1080 across dual HDMI), CenterWindow in the NativeWindowViews constructor clamps the size to the primary display's work area (1920x1080). InitFromOptions then called SetPosition(x, y), which only updated the position and preserved the clamped size, so the window was permanently stuck at 1920x1080. Fix: change InitFromOptions to call SetBounds with the full rect (position + original size from options) instead of SetPosition, restoring the intended dimensions after CenterWindow's clamping. This regression was introduced by upstream Electron commit 4affacb ("fix: external resize hit targets for frameless windows on Windows", PR electron#50864). That commit added a guard condition `if (!GetRestoredFrameBorderInsets().IsEmpty())` around a post-CenterWindow SetBounds call in the NativeWindowViews constructor, which previously ran unconditionally on Linux. For frameless windows (where frame border insets are zero), the SetBounds is now skipped, leaving CenterWindow's clamped size in effect. In Electron 28, the unconditional SetBounds after CenterWindow always restored the original requested size: // On linux after the widget is initialized we might have to force set the // bounds if the bounds are smaller than the current display SetBounds(gfx::Rect(GetPosition(), bounds.size()), false); This was preserved in commit 931c257 (PR electron#49209, "accurate window sizing and support for content sizing on Linux/Wayland with CSD"), which even documented the intent: "The widget clamps bounds to fit the screen, but we want to allow windows larger than the display." The subsequent commit 4affacb then inadvertently broke this for frameless windows.
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caneraltinbasak
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Change is fine. Consider sending upstream.
| // and preserves the clamped size, so we must restore the full bounds. | ||
| const int w = options.ValueOrDefault(options::kWidth, GetSize().width()); | ||
| const int h = options.ValueOrDefault(options::kHeight, GetSize().height()); | ||
| SetBounds(gfx::Rect(x, y, w, h), false); |
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Description of Change
When creating a frameless BrowserWindow spanning multiple displays (e.g. 3840x1080 across dual HDMI), CenterWindow in the NativeWindowViews constructor clamps the size to the primary display's work area (1920x1080). InitFromOptions then called SetPosition(x, y), which only updated the position and preserved the clamped size, so the window was permanently stuck at 1920x1080.
Fix: change InitFromOptions to call SetBounds with the full rect (position + original size from options) instead of SetPosition, restoring the intended dimensions after CenterWindow's clamping.
This regression was introduced by upstream Electron commit 4affacb ("fix: external resize hit targets for frameless windows on Windows", PR electron#50864). That commit added a guard condition
if (!GetRestoredFrameBorderInsets().IsEmpty())around a post-CenterWindow SetBounds call in the NativeWindowViews constructor, which previously ran unconditionally on Linux. For frameless windows (where frame border insets are zero), the SetBounds is now skipped, leaving CenterWindow's clamped size in effect.In Electron 28, the unconditional SetBounds after CenterWindow always restored the original requested size:
// On linux after the widget is initialized we might have to force set the
// bounds if the bounds are smaller than the current display
SetBounds(gfx::Rect(GetPosition(), bounds.size()), false);
This was preserved in commit 931c257 (PR electron#49209, "accurate window sizing and support for content sizing on Linux/Wayland with CSD"), which even documented the intent: "The widget clamps bounds to fit the screen, but we want to allow windows larger than the display." The subsequent commit 4affacb then inadvertently broke this for frameless windows.
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