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Refactor panning scrollbars

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- refactor variable names
- make pens and brushes dispose
This commit is contained in:
L1Q 2017-12-07 11:17:04 +02:00
parent 4275a16f28
commit 71fec869f7
1 changed files with 32 additions and 35 deletions
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67
ShareX.ScreenCaptureLib/Forms/RegionCaptureForm.cs
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@ -1026,56 +1026,53 @@ private void DrawBottomTipAnimation(Graphics g, TextAnimation textAnimation)
private void DrawPanningScrollbars(Graphics g)
{
Color backgroundColor = Color.FromArgb(13, 243, 242, 249);
Brush backgroundBrush = new SolidBrush(backgroundColor);
Pen backgroundPen = new Pen(backgroundBrush);
Color foregroundColor = Color.FromArgb(21, 234, 234, 235);
Brush foregroundBrush = new SolidBrush(foregroundColor);
Pen foregroundPen = new Pen(foregroundBrush);
int paddingSize = 30;
int paddingSize = 15;
int scrollbarThickness = 16;
Rectangle imageRectangleVisible = CanvasRectangle;
imageRectangleVisible.Intersect(ClientArea);
if (CanvasRectangle.Left < ClientArea.Left || CanvasRectangle.Right > ClientArea.Right)
Color trackColor = Color.FromArgb(13, 243, 242, 249);
Color thumbColor = Color.FromArgb(21, 234, 234, 235);
using (Brush trackBrush = new SolidBrush(trackColor))
using (Brush thumbBrush = new SolidBrush(thumbColor))
using (Pen trackPen = new Pen(trackBrush))
using (Pen thumbPen = new Pen(thumbBrush))
{
int scrollbar_hor_background_length = ClientArea.Width - paddingSize * 2;
int scrollbar_hor_foreground_length = Math.Max(scrollbarThickness, (int)((float)imageRectangleVisible.Width / (float)CanvasRectangle.Width * (float)scrollbar_hor_background_length));
if (CanvasRectangle.Left < ClientArea.Left || CanvasRectangle.Right > ClientArea.Right)
{
int trackHorizontalLength = ClientArea.Width - paddingSize * 2 - scrollbarThickness;
int thumbHorizontalLength = Math.Max(scrollbarThickness, (int)((float)imageRectangleVisible.Width / (float)CanvasRectangle.Width * (float)trackHorizontalLength));
Rectangle scrollbar_hor_background_region = new Rectangle(new Point(paddingSize / 2, ClientArea.Bottom - (scrollbarThickness + paddingSize)), new Size(scrollbar_hor_background_length, scrollbarThickness));
Rectangle trackHorizontalRegion = new Rectangle(new Point(paddingSize, ClientArea.Bottom - (scrollbarThickness + paddingSize)), new Size(trackHorizontalLength, scrollbarThickness));
double scrollbar_hor_limit = ((float)scrollbar_hor_background_length - (float)scrollbar_hor_foreground_length) / 2.0f;
double scrollbar_hor_foreground_pos = (float)scrollbar_hor_background_region.Center().X - ((float)scrollbar_hor_foreground_length / 2.0f)
- Math.Min(scrollbar_hor_limit, Math.Max(-scrollbar_hor_limit,
CanvasCenterOffset.X / (float)CanvasRectangle.Width * (float)scrollbar_hor_background_length
));
double limitHorizontal = ((float)trackHorizontalLength - (float)thumbHorizontalLength) / 2.0f;
double trackHorizontalPositionX = (float)trackHorizontalRegion.Center().X - ((float)thumbHorizontalLength / 2.0f)
- Math.Min(limitHorizontal, Math.Max(-limitHorizontal, CanvasCenterOffset.X / (float)CanvasRectangle.Width * (float)trackHorizontalLength));
Rectangle scrollbar_hor_foreground_region = new Rectangle(new Point((int)scrollbar_hor_foreground_pos, ClientArea.Bottom - (scrollbarThickness + paddingSize)), new Size(scrollbar_hor_foreground_length, scrollbarThickness));
Rectangle thumbHorizontalRegion = new Rectangle(new Point((int)trackHorizontalPositionX, ClientArea.Bottom - (scrollbarThickness + paddingSize)), new Size(thumbHorizontalLength, scrollbarThickness));
g.DrawRoundedRectangle(backgroundBrush, backgroundPen, scrollbar_hor_background_region, scrollbarThickness / 2);
g.DrawRoundedRectangle(foregroundBrush, foregroundPen, scrollbar_hor_foreground_region, scrollbarThickness / 2);
}
g.DrawRoundedRectangle(trackBrush, trackPen, trackHorizontalRegion, scrollbarThickness / 2);
g.DrawRoundedRectangle(thumbBrush, thumbPen, thumbHorizontalRegion, scrollbarThickness / 2);
}
if (CanvasRectangle.Top < ClientArea.Top || CanvasRectangle.Bottom > ClientArea.Bottom)
{
int scrollbar_ver_background_length = ClientArea.Height - paddingSize * 2;
int scrollbar_ver_foreground_length = Math.Max(scrollbarThickness, (int)((float)imageRectangleVisible.Height / (float)CanvasRectangle.Height * (float)scrollbar_ver_background_length));
if (CanvasRectangle.Top < ClientArea.Top || CanvasRectangle.Bottom > ClientArea.Bottom)
{
int trackVecticalLength = ClientArea.Height - paddingSize * 2 - scrollbarThickness;
int thumbVecticalLength = Math.Max(scrollbarThickness, (int)((float)imageRectangleVisible.Height / (float)CanvasRectangle.Height * (float)trackVecticalLength));
Rectangle scrollbar_ver_background_region = new Rectangle(new Point(ClientArea.Right - (scrollbarThickness + paddingSize), paddingSize / 2), new Size(scrollbarThickness, scrollbar_ver_background_length));
Rectangle trackVecticalRegion = new Rectangle(new Point(ClientArea.Right - (scrollbarThickness + paddingSize), paddingSize), new Size(scrollbarThickness, trackVecticalLength));
double scrollbar_ver_limit = ((float)scrollbar_ver_background_length - (float)scrollbar_ver_foreground_length) / 2.0f;
double scrollbar_ver_foreground_pos = (float)scrollbar_ver_background_region.Center().Y - ((float)scrollbar_ver_foreground_length / 2.0f)
- Math.Min(scrollbar_ver_limit, Math.Max(-scrollbar_ver_limit,
CanvasCenterOffset.Y / (float)CanvasRectangle.Height * (float)scrollbar_ver_background_length
));
double limitVectical = ((float)trackVecticalLength - (float)thumbVecticalLength) / 2.0f;
double trackVecticalPositionY = (float)trackVecticalRegion.Center().Y - ((float)thumbVecticalLength / 2.0f)
- Math.Min(limitVectical, Math.Max(-limitVectical, CanvasCenterOffset.Y / (float)CanvasRectangle.Height * (float)trackVecticalLength));
Rectangle scrollbar_ver_foreground_region = new Rectangle(new Point(ClientArea.Right - (scrollbarThickness + paddingSize), (int)scrollbar_ver_foreground_pos), new Size(scrollbarThickness, scrollbar_ver_foreground_length));
Rectangle thumbVecticalRegion = new Rectangle(new Point(ClientArea.Right - (scrollbarThickness + paddingSize), (int)trackVecticalPositionY), new Size(scrollbarThickness, thumbVecticalLength));
g.DrawRoundedRectangle(backgroundBrush, backgroundPen, scrollbar_ver_background_region, scrollbarThickness / 2);
g.DrawRoundedRectangle(foregroundBrush, foregroundPen, scrollbar_ver_foreground_region, scrollbarThickness / 2);
g.DrawRoundedRectangle(trackBrush, trackPen, trackVecticalRegion, scrollbarThickness / 2);
g.DrawRoundedRectangle(thumbBrush, thumbPen, thumbVecticalRegion, scrollbarThickness / 2);
}
}
}