private void DrawGlyph(DrawingContext dc, ScrollGlyph glyph, ref Rect bounds)
{
if ((bounds.Width > 0.0) && (bounds.Height > 0.0))
{
Brush brush = Glyph;
if ((brush != null) && (glyph != ScrollGlyph.None))
{
switch (glyph)
{
case ScrollGlyph.HorizontalGripper:
DrawHorizontalGripper(dc, brush, bounds);
break;
case ScrollGlyph.VerticalGripper:
DrawVerticalGripper(dc, brush, bounds);
break;
case ScrollGlyph.LeftArrow:
case ScrollGlyph.RightArrow:
case ScrollGlyph.UpArrow:
case ScrollGlyph.DownArrow:
DrawArrow(dc, brush, bounds, glyph);
break;
}
}
}
}
private static bool IsValidScrollGlyph(object o)
{
ScrollGlyph glyph = (ScrollGlyph)o;
return(glyph == ScrollGlyph.None ||
glyph == ScrollGlyph.VerticalGripper ||
glyph == ScrollGlyph.HorizontalGripper);
}
/// <summary>
/// Attachs the value to the object.
/// </summary>
/// <param name="element">The object on which the value will be attached.</param>
/// <param name="value">The value to attach.</param>
public static void SetScrollGlyph(DependencyObject element, ScrollGlyph value)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(ScrollGlyphProperty, value);
}
private static bool IsValidScrollGlyph(object o)
{
ScrollGlyph glyph = (ScrollGlyph)o;
return(glyph == ScrollGlyph.None ||
glyph == ScrollGlyph.LeftArrow ||
glyph == ScrollGlyph.RightArrow ||
glyph == ScrollGlyph.UpArrow ||
glyph == ScrollGlyph.DownArrow ||
glyph == ScrollGlyph.VerticalGripper ||
glyph == ScrollGlyph.HorizontalGripper);
}
private void DrawArrow(DrawingContext dc, Brush brush, Rect bounds, ScrollGlyph glyph)
{
if (_transform == null)
{
double glyphWidth = 9.0;
double glyphHeight = 9.0;
switch (glyph)
{
case ScrollGlyph.LeftArrow:
case ScrollGlyph.RightArrow:
glyphWidth = 8.0;
break;
case ScrollGlyph.UpArrow:
case ScrollGlyph.DownArrow:
glyphHeight = 8.0;
break;
}
Matrix matrix = new Matrix();
if ((bounds.Width < glyphWidth) || (bounds.Height < glyphHeight))
{
double widthScale = Math.Min(glyphWidth, bounds.Width) / glyphWidth;
double heightScale = Math.Min(glyphHeight, bounds.Height) / glyphHeight;
double x = (bounds.X + (bounds.Width * 0.5)) / widthScale - (glyphWidth * 0.5);
double y = (bounds.Y + (bounds.Height * 0.5)) / heightScale - (glyphHeight * 0.5);
if (double.IsNaN(widthScale) || double.IsInfinity(widthScale) || double.IsNaN(heightScale) || double.IsInfinity(heightScale) ||
double.IsNaN(x) || double.IsInfinity(x) || double.IsNaN(y) || double.IsInfinity(y))
{
return;
}
matrix.Translate(x, y);
matrix.Scale(widthScale, heightScale);
}
else
{
double x = bounds.X + (bounds.Width * 0.5) - (glyphWidth * 0.5);
double y = bounds.Y + (bounds.Height * 0.5) - (glyphHeight * 0.5);
matrix.Translate(x, y);
}
_transform = new MatrixTransform();
_transform.Matrix = matrix;
}
dc.PushTransform(_transform);
switch (glyph)
{
case ScrollGlyph.LeftArrow:
dc.DrawGeometry(brush, null, LeftArrowGeometry);
break;
case ScrollGlyph.RightArrow:
dc.DrawGeometry(brush, null, RightArrowGeometry);
break;
case ScrollGlyph.UpArrow:
dc.DrawGeometry(brush, null, UpArrowGeometry);
break;
case ScrollGlyph.DownArrow:
dc.DrawGeometry(brush, null, DownArrowGeometry);
break;
}
dc.Pop(); // Center and scaling transform
}
private void DrawGlyph(DrawingContext dc, ScrollGlyph glyph, ref Rect bounds)
{
if ((bounds.Width > 0.0) && (bounds.Height > 0.0))
{
Brush brush = Glyph;
if ((brush != null) && (glyph != ScrollGlyph.None))
{
switch (glyph)
{
case ScrollGlyph.HorizontalGripper:
DrawHorizontalGripper(dc, brush, bounds);
break;
case ScrollGlyph.VerticalGripper:
DrawVerticalGripper(dc, brush, bounds);
break;
case ScrollGlyph.LeftArrow:
case ScrollGlyph.RightArrow:
case ScrollGlyph.UpArrow:
case ScrollGlyph.DownArrow:
DrawArrow(dc, brush, bounds, glyph);
break;
}
}
}
}
/// <summary>
/// Attachs the value to the object.
/// </summary>
/// <param name="element">The object on which the value will be attached.</param>
/// <param name="value">The value to attach.</param>
public static void SetScrollGlyph(DependencyObject element, ScrollGlyph value)
{
if (element == null) { throw new ArgumentNullException("element"); }
element.SetValue(ScrollGlyphProperty, value);
}
public static void SetScrollGlyph(DependencyObject element, ScrollGlyph value)
{
element.SetValue(ScrollGlyphProperty, value);
}
protected override void OnRender(DrawingContext drawingContext)
{
//TODO: Lookup colors.
double actual_width_without_padding = ActualWidth - Padding.Left - Padding.Right;
double actual_height_without_padding = ActualHeight - Padding.Top - Padding.Bottom;
ScrollGlyph glyph = GetScrollGlyph(this);
double glyph_one_pixel_horizontal_padding = (glyph == ScrollGlyph.DownArrow || glyph == ScrollGlyph.UpArrow || glyph == ScrollGlyph.VerticalGripper) ? 1 : 0;
double glyph_one_pixel_vertical_padding = (glyph == ScrollGlyph.LeftArrow || glyph == ScrollGlyph.RightArrow || glyph == ScrollGlyph.HorizontalGripper) ? 1 : 0;
bool has_outer_border = HasOuterBorder;
if (has_outer_border)
{
if (actual_width_without_padding - glyph_one_pixel_horizontal_padding < 3)
{
return;
}
if (actual_height_without_padding - glyph_one_pixel_vertical_padding < 3)
{
return;
}
drawingContext.DrawRoundedRectangle(null, new Pen(new LinearGradientBrush(new GradientStopCollection(new GradientStop [] {
new GradientStop(Color.FromArgb(0, 0xA0, 0xB5, 0xD3), 0),
new GradientStop(Color.FromArgb(0xFF, 0xA0, 0xB5, 0xD3), 0.5),
new GradientStop(Color.FromArgb(0xFF, 0X7C, 0x9F, 0xD3), 1)
}), new Point(0, 0), new Point(0, 1)), 1), new Rect(0.5 + Padding.Left + glyph_one_pixel_horizontal_padding, 2.5 + Padding.Top + glyph_one_pixel_vertical_padding, actual_width_without_padding - 1 - glyph_one_pixel_horizontal_padding, actual_height_without_padding - 3 - glyph_one_pixel_vertical_padding), 3, 3);
}
if (actual_width_without_padding < 4 || actual_height_without_padding < 4)
{
return;
}
double fill_extra_padding = has_outer_border ? 2 : 1;
double fill_radius = has_outer_border ? 2 : 1.5;
bool render_pressed = RenderPressed;
bool render_mouse_over = RenderMouseOver && !RenderPressed;
drawingContext.DrawRoundedRectangle(new LinearGradientBrush(new GradientStopCollection(glyph == ScrollGlyph.HorizontalGripper || glyph == ScrollGlyph.VerticalGripper ? new GradientStop [] {
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0xA8, 0xBE, 0xF5) : (render_mouse_over ? Color.FromArgb(0xFF, 0xDA, 0xE9, 0xFF) : Color.FromArgb(0xFF, 0xC9, 0xD8, 0xFC)), 0),
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0xA1, 0xBD, 0xFA) : (render_mouse_over ? Color.FromArgb(0xFF, 0xD4, 0xE6, 0xFF) : Color.FromArgb(0xFF, 0xC2, 0xD3, 0xFC)), 0.65000000000000002),
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0x98, 0xB0, 0xEE) : (render_mouse_over ? Color.FromArgb(0xFF, 0xCA, 0xE0, 0xFF) : Color.FromArgb(0xFF, 0xB6, 0xCD, 0xFB)), 1)
} : (render_mouse_over ? new GradientStop [] {
new GradientStop(Color.FromArgb(0xFF, 0xFD, 0xFF, 0xFF), 0),
new GradientStop(Color.FromArgb(0xFF, 0xE2, 0xF3, 0xFD), 0.25),
new GradientStop(Color.FromArgb(0xFF, 0xB9, 0xDA, 0xFB), 1)
} : new GradientStop [] {
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0x6E, 0x8E, 0xF1) : Color.FromArgb(0xFF, 0xE1, 0xEA, 0xFE), 0),
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0x80, 0x9D, 0xF1) : Color.FromArgb(0xFF, 0xC3, 0xD3, 0xFD), 0.29999999999999999),
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0xAF, 0xBF, 0xED) : Color.FromArgb(0xFF, 0xC3, 0xD3, 0xFD), render_pressed ? 0.69999999999999996 : 0.59999999999999998),
new GradientStop(render_pressed ? Color.FromArgb(0xFF, 0xD2, 0xDE, 0xEB) : Color.FromArgb(0xFF, 0xBB, 0xCD, 0xF9), 1)
})), new Point(0, 0), new Point(glyph == ScrollGlyph.HorizontalGripper ? 0 : 1, glyph == ScrollGlyph.VerticalGripper ? 0 : 1)), new Pen(has_outer_border ? Brushes.White : new SolidColorBrush(Color.FromArgb(0xFF, 0xB4, 0xC8, 0xF6)), 1), new Rect(0.5 + Padding.Left + glyph_one_pixel_horizontal_padding, 0.5 + Padding.Top + glyph_one_pixel_vertical_padding, actual_width_without_padding - fill_extra_padding - glyph_one_pixel_horizontal_padding, actual_height_without_padding - fill_extra_padding - glyph_one_pixel_vertical_padding), fill_radius, fill_radius);
if (has_outer_border)
{
if (actual_width_without_padding < 6 || actual_height_without_padding < 6)
{
return;
}
Color color;
if ((glyph == ScrollGlyph.HorizontalGripper || glyph == ScrollGlyph.VerticalGripper) && render_mouse_over)
{
color = Color.FromArgb(0xFF, 0xAC, 0xCE, 0xFF);
}
else
{
if (render_pressed)
{
color = Color.FromArgb(0xFF, 0x83, 0x8F, 0xDA);
}
else if (render_mouse_over)
{
color = Color.FromArgb(0xFF, 0x98, 0xB1, 0xE4);
}
else
{
color = Color.FromArgb(0xFF, 0xB4, 0xC8, 0xF6);
}
}
drawingContext.DrawRoundedRectangle(null, new Pen(new SolidColorBrush(color), 1), new Rect(1.5 + Padding.Left + glyph_one_pixel_horizontal_padding, 1.5 + Padding.Top + glyph_one_pixel_vertical_padding, actual_width_without_padding - 4 - glyph_one_pixel_horizontal_padding, actual_height_without_padding - 4 - glyph_one_pixel_vertical_padding), 1.5, 1.5);
}
switch (glyph)
{
case ScrollGlyph.DownArrow:
case ScrollGlyph.LeftArrow:
case ScrollGlyph.RightArrow:
case ScrollGlyph.UpArrow:
Point start_point;
Point segment_point_1;
Point segment_point_2;
Point segment_point_3;
Point segment_point_4;
Point segment_point_5;
switch (glyph)
{
case ScrollGlyph.DownArrow:
start_point = new Point(0, 3.5);
segment_point_1 = new Point(4.5, 8);
segment_point_2 = new Point(9, 3.5);
segment_point_3 = new Point(7.5, 2);
segment_point_4 = new Point(4.5, 5);
segment_point_5 = new Point(1.5, 2);
break;
case ScrollGlyph.LeftArrow:
start_point = new Point(4.5, 0);
segment_point_1 = new Point(0, 4.5);
segment_point_2 = new Point(4.5, 9);
segment_point_3 = new Point(6, 7.5);
segment_point_4 = new Point(3, 4.5);
segment_point_5 = new Point(6, 1.5);
break;
case ScrollGlyph.RightArrow:
start_point = new Point(3.5, 0);
segment_point_1 = new Point(8, 4.5);
segment_point_2 = new Point(3.5, 9);
segment_point_3 = new Point(2, 7.5);
segment_point_4 = new Point(5, 4.5);
segment_point_5 = new Point(2, 1.5);
break;
default:
start_point = new Point(0, 4.5);
segment_point_1 = new Point(4.5, 0);
segment_point_2 = new Point(9, 4.5);
segment_point_3 = new Point(7.5, 6);
segment_point_4 = new Point(4.5, 3);
segment_point_5 = new Point(1.5, 6);
break;
}
drawingContext.PushTransform(new MatrixTransform(1, 0, 0, 1, (actual_width_without_padding - 9) / 2, (actual_height_without_padding - 9) / 2));
drawingContext.DrawGeometry(new SolidColorBrush(Color.FromArgb(0xFF, 0x4D, 0x61, 0x85)), null, new PathGeometry(new PathFigure [] { new PathFigure(start_point, new PathSegment[] {
new LineSegment(segment_point_1, true),
new LineSegment(segment_point_2, true),
new LineSegment(segment_point_3, true),
new LineSegment(segment_point_4, true),
new LineSegment(segment_point_5, true)
}, true) }, FillRule.EvenOdd, Transform.Identity));
drawingContext.Pop();
break;
case ScrollGlyph.HorizontalGripper:
case ScrollGlyph.VerticalGripper:
const double MinimumSizeInScrollDirection = 14;
bool horizontal = glyph == ScrollGlyph.HorizontalGripper;
if ((horizontal ? actual_width_without_padding : actual_height_without_padding) <= MinimumSizeInScrollDirection)
{
return;
}
const double MinimumSizeInOtherDirection = 9;
if ((horizontal ? actual_height_without_padding : actual_width_without_padding) <= MinimumSizeInOtherDirection)
{
return;
}
Color gripper_color;
if (render_pressed)
{
gripper_color = Color.FromArgb(0xFF, 0xCF, 0xDD, 0xFD);
}
else if (render_mouse_over)
{
gripper_color = Color.FromArgb(0xFF, 0xFC, 0xFD, 0xFF);
}
else
{
gripper_color = Color.FromArgb(0xFF, 0xEE, 0xF4, 0xFE);
}
Brush gripper_brush = new SolidColorBrush(gripper_color);
Color gripper_shadow_color;
if (render_pressed)
{
gripper_shadow_color = Color.FromArgb(0xFF, 0x83, 0x9E, 0xD8);
}
else if (render_mouse_over)
{
gripper_shadow_color = Color.FromArgb(0xFF, 0x9C, 0xC5, 0xFF);
}
else
{
gripper_shadow_color = Color.FromArgb(0xFF, 0x8C, 0xB0, 0xF8);
}
Brush gripper_shadow_brush = new SolidColorBrush(gripper_shadow_color);
for (int gripper_line_index = 0; gripper_line_index < 4; gripper_line_index++)
{
drawingContext.DrawRectangle(gripper_brush, null, horizontal ? new Rect((actual_width_without_padding - 9) / 2 + gripper_line_index * 2, (actual_height_without_padding - 6) / 2, 1, 5) : new Rect((actual_width_without_padding - 6) / 2, (actual_height_without_padding - 9) / 2 + gripper_line_index * 2, 5, 1));
drawingContext.DrawRectangle(gripper_shadow_brush, null, horizontal ? new Rect((actual_width_without_padding - 9) / 2 + gripper_line_index * 2 + 1, (actual_height_without_padding - 6) / 2 + 1, 1, 5) : new Rect((actual_width_without_padding - 6) / 2 + 1, (actual_height_without_padding - 9) / 2 + gripper_line_index * 2 + 1, 5, 1));
}
break;
}
}
private void DrawArrow(DrawingContext dc, Brush brush, Rect bounds, ScrollGlyph glyph)
{
if (_transform == null)
{
double glyphWidth = 9.0;
double glyphHeight = 9.0;
switch (glyph)
{
case ScrollGlyph.LeftArrow:
case ScrollGlyph.RightArrow:
glyphWidth = 8.0;
break;
case ScrollGlyph.UpArrow:
case ScrollGlyph.DownArrow:
glyphHeight = 8.0;
break;
}
Matrix matrix = new Matrix();
if ((bounds.Width < glyphWidth) || (bounds.Height < glyphHeight))
{
double widthScale = Math.Min(glyphWidth, bounds.Width) / glyphWidth;
double heightScale = Math.Min(glyphHeight, bounds.Height) / glyphHeight;
double x = (bounds.X + (bounds.Width * 0.5)) / widthScale - (glyphWidth * 0.5);
double y = (bounds.Y + (bounds.Height * 0.5)) / heightScale - (glyphHeight * 0.5);
if (double.IsNaN(widthScale) || double.IsInfinity(widthScale) || double.IsNaN(heightScale) || double.IsInfinity(heightScale) ||
double.IsNaN(x) || double.IsInfinity(x) || double.IsNaN(y) || double.IsInfinity(y))
{
return;
}
matrix.Translate(x, y);
matrix.Scale(widthScale, heightScale);
}
else
{
double x = bounds.X + (bounds.Width * 0.5) - (glyphWidth * 0.5);
double y = bounds.Y + (bounds.Height * 0.5) - (glyphHeight * 0.5);
matrix.Translate(x, y);
}
_transform = new MatrixTransform();
_transform.Matrix = matrix;
}
dc.PushTransform(_transform);
switch (glyph)
{
case ScrollGlyph.LeftArrow:
dc.DrawGeometry(brush, null, LeftArrowGeometry);
break;
case ScrollGlyph.RightArrow:
dc.DrawGeometry(brush, null, RightArrowGeometry);
break;
case ScrollGlyph.UpArrow:
dc.DrawGeometry(brush, null, UpArrowGeometry);
break;
case ScrollGlyph.DownArrow:
dc.DrawGeometry(brush, null, DownArrowGeometry);
break;
}
dc.Pop(); // Center and scaling transform
}
/// <summary>
/// Render callback.
/// Note: Assumes all borders are 1 unit.
/// </summary>
protected override void OnRender(DrawingContext drawingContext)
{
Rect bounds = new Rect(0, 0, ActualWidth, ActualHeight);
ScrollGlyph glyph = ScrollGlyph;
bool hasModifiers;
// Padding will be used to inset the border - used by ComboBox buttons
if (GetValueSource(PaddingProperty, null, out hasModifiers) != BaseValueSourceInternal.Default || hasModifiers)
{
Thickness padding = Padding;
double totalPadding = padding.Left + padding.Right;
if (totalPadding >= bounds.Width)
{
bounds.Width = 0.0;
}
else
{
bounds.X += padding.Left;
bounds.Width -= totalPadding;
}
totalPadding = padding.Top + padding.Bottom;
if (totalPadding >= bounds.Height)
{
bounds.Height = 0.0;
}
else
{
bounds.Y += padding.Top;
bounds.Height -= totalPadding;
}
}
if ((bounds.Width >= 1.0) && (bounds.Height >= 1.0))
{
bounds.X += 0.5;
bounds.Y += 0.5;
bounds.Width -= 1.0;
bounds.Height -= 1.0;
}
switch (glyph)
{
case ScrollGlyph.LeftArrow:
case ScrollGlyph.RightArrow:
case ScrollGlyph.HorizontalGripper:
if (bounds.Height >= 1.0)
{
bounds.Y += 1.0;
bounds.Height -= 1.0;
}
break;
case ScrollGlyph.UpArrow:
case ScrollGlyph.DownArrow:
case ScrollGlyph.VerticalGripper:
if (bounds.Width >= 1.0)
{
bounds.X += 1.0;
bounds.Width -= 1.0;
}
break;
}
DrawBorders(drawingContext, ref bounds);
DrawGlyph(drawingContext, glyph, ref bounds);
}
public static void SetScrollGlyph (DependencyObject element, ScrollGlyph value)
{
element.SetValue (ScrollGlyphProperty, value);
}