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Issue #58: when resizing (WM_SIZING) and on wheel scroll the aspect ratio of the source window is refreshed.

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AspectRatioForm now stores initial aspect ratio on window handle creation (until new aspect ratio is set).
This commit is contained in:
Lorenz Cuno Klopfenstein 2014-01-09 00:45:36 +01:00
parent 56e47fb7e5
commit 1c253bdcb1
2 changed files with 57 additions and 30 deletions
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75
OnTopReplica/AspectRatioForm.cs
View file

@ -71,6 +71,13 @@ namespace OnTopReplica {
}
}
protected override void OnHandleCreated(EventArgs e) {
base.OnHandleCreated(e);
//When created, use first size of the window as aspect ratio
SetAspectRatio(ClientSize, false);
}
/// <summary>
/// Forces the form to update its height based on the current aspect ratio setting.
/// </summary>
@ -155,47 +162,55 @@ namespace OnTopReplica {
}
}
protected virtual void OnResizing(EventArgs e) {
}
/// <summary>
/// Override WM_SIZING message to restrict resizing.
/// Taken from: http://www.vcskicks.com/maintain-aspect-ratio.php
/// Improved with code from: http://stoyanoff.info/blog/2010/06/27/resizing-forms-while-keeping-aspect-ratio/
/// </summary>
protected override void WndProc(ref Message m) {
if (KeepAspectRatio && m.Msg == WM.SIZING) {
var clientSizeConversion = ClientWindowDifference;
if (m.Msg == WM.SIZING) {
this.OnResizing(EventArgs.Empty);
var rc = (Native.NRectangle)Marshal.PtrToStructure(m.LParam, typeof(Native.NRectangle));
int res = m.WParam.ToInt32();
if (KeepAspectRatio) {
var clientSizeConversion = ClientWindowDifference;
int width = (rc.Right - rc.Left) - clientSizeConversion.Width - ExtraPadding.Horizontal;
int height = (rc.Bottom - rc.Top) - clientSizeConversion.Height - ExtraPadding.Vertical;
var rc = (Native.NRectangle)Marshal.PtrToStructure(m.LParam, typeof(Native.NRectangle));
int res = m.WParam.ToInt32();
if (res == WMSZ.LEFT || res == WMSZ.RIGHT) {
//Left or right resize, adjust top and bottom
int targetHeight = (int)(width / AspectRatio);
int diffHeight = height - targetHeight;
int width = (rc.Right - rc.Left) - clientSizeConversion.Width - ExtraPadding.Horizontal;
int height = (rc.Bottom - rc.Top) - clientSizeConversion.Height - ExtraPadding.Vertical;
rc.Top += (int)(diffHeight / 2.0);
rc.Bottom = rc.Top + targetHeight + ExtraPadding.Vertical + clientSizeConversion.Height;
if (res == WMSZ.LEFT || res == WMSZ.RIGHT) {
//Left or right resize, adjust top and bottom
int targetHeight = (int)(width / AspectRatio);
int diffHeight = height - targetHeight;
rc.Top += (int)(diffHeight / 2.0);
rc.Bottom = rc.Top + targetHeight + ExtraPadding.Vertical + clientSizeConversion.Height;
}
else if (res == WMSZ.TOP || res == WMSZ.BOTTOM) {
//Up or down resize, adjust left and right
int targetWidth = (int)(height * AspectRatio);
int diffWidth = width - targetWidth;
rc.Left += (int)(diffWidth / 2.0);
rc.Right = rc.Left + targetWidth + ExtraPadding.Horizontal + clientSizeConversion.Width;
}
else if (res == WMSZ.RIGHT + WMSZ.BOTTOM || res == WMSZ.LEFT + WMSZ.BOTTOM) {
//Lower corner resize, adjust bottom
rc.Bottom = rc.Top + (int)(width / AspectRatio) + ExtraPadding.Vertical + clientSizeConversion.Height;
}
else if (res == WMSZ.LEFT + WMSZ.TOP || res == WMSZ.RIGHT + WMSZ.TOP) {
//Upper corner resize, adjust top
rc.Top = rc.Bottom - (int)(width / AspectRatio) - ExtraPadding.Vertical - clientSizeConversion.Height;
}
Marshal.StructureToPtr(rc, m.LParam, false);
}
else if (res == WMSZ.TOP || res == WMSZ.BOTTOM) {
//Up or down resize, adjust left and right
int targetWidth = (int)(height * AspectRatio);
int diffWidth = width - targetWidth;
rc.Left += (int)(diffWidth / 2.0);
rc.Right = rc.Left + targetWidth + ExtraPadding.Horizontal + clientSizeConversion.Width;
}
else if (res == WMSZ.RIGHT + WMSZ.BOTTOM || res == WMSZ.LEFT + WMSZ.BOTTOM) {
//Lower corner resize, adjust bottom
rc.Bottom = rc.Top + (int)(width / AspectRatio) + ExtraPadding.Vertical + clientSizeConversion.Height;
}
else if (res == WMSZ.LEFT + WMSZ.TOP || res == WMSZ.RIGHT + WMSZ.TOP) {
//Upper corner resize, adjust top
rc.Top = rc.Bottom - (int)(width / AspectRatio) - ExtraPadding.Vertical - clientSizeConversion.Height;
}
Marshal.StructureToPtr(rc, m.LParam, false);
}
base.WndProc(ref m);

12
OnTopReplica/MainForm.cs
View file

@ -101,6 +101,13 @@ namespace OnTopReplica {
RefreshScreenLock();
}
protected override void OnResizing(EventArgs e) {
//Update aspect ratio from thumbnail while resizing (but do not refresh, resizing does that anyway)
if (_thumbnailPanel.IsShowingThumbnail) {
SetAspectRatio(_thumbnailPanel.ThumbnailPixelSize, false);
}
}
protected override void OnActivated(EventArgs e) {
base.OnActivated(e);
@ -127,8 +134,13 @@ namespace OnTopReplica {
base.OnMouseWheel(e);
if (!FullscreenManager.IsFullscreen) {
if (_thumbnailPanel.IsShowingThumbnail) {
SetAspectRatio(_thumbnailPanel.ThumbnailPixelSize, false);
}
int change = (int)(e.Delta / 6.0); //assumes a mouse wheel "tick" is in the 80-120 range
AdjustSize(change);
RefreshScreenLock();
}
}