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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2008 George Giolfan
//
// Authors:
// George Giolfan (georgegiolfan@yahoo.com)
using System.Drawing;
using System.Windows.Forms.VisualStyles;
namespace System.Windows.Forms.Theming.VisualStyles
{
class TabControlPainter : Default.TabControlPainter
{
static bool ShouldPaint (TabControl tabControl) {
return ThemeVisualStyles.RenderClientAreas &&
tabControl.Alignment == TabAlignment.Top &&
tabControl.DrawMode == TabDrawMode.Normal;
}
protected override void DrawBackground (Graphics dc, Rectangle area, TabControl tab)
{
if (!ShouldPaint (tab)) {
base.DrawBackground (dc, area, tab);
return;
}
VisualStyleElement element = VisualStyleElement.Tab.Pane.Normal;
if (!VisualStyleRenderer.IsElementDefined (element)) {
base.DrawBackground (dc, area, tab);
return;
}
Rectangle panel_rectangle = GetTabPanelRect (tab);
if (panel_rectangle.IntersectsWith (area))
new VisualStyleRenderer (element).DrawBackground (dc, panel_rectangle, area);
}
protected override int DrawTab (Graphics dc, TabPage page, TabControl tab, Rectangle bounds, bool is_selected)
{
if (!ShouldPaint (tab))
return base.DrawTab (dc, page, tab, bounds, is_selected);
VisualStyleElement element = GetVisualStyleElement (tab, page, is_selected);
if (!VisualStyleRenderer.IsElementDefined (element))
return base.DrawTab (dc, page, tab, bounds, is_selected);
new VisualStyleRenderer (element).DrawBackground (dc, bounds);
bounds.Inflate (
-(tab.Padding.X),
-(tab.Padding.Y));
Rectangle text_area = bounds;
if (tab.ImageList != null && page.ImageIndex >= 0 && page.ImageIndex < tab.ImageList.Images.Count) {
int image_y = bounds.Y + (bounds.Height - tab.ImageList.ImageSize.Height) / 2;
tab.ImageList.Draw (dc, new Point (bounds.X, image_y), page.ImageIndex);
int image_occupied_space = tab.ImageList.ImageSize.Width + 2;
text_area.X += image_occupied_space;
text_area.Width -= image_occupied_space;
}
if (page.Text != null)
dc.DrawString (page.Text, tab.Font, SystemBrushes.ControlText, text_area, DefaultFormatting);
if (tab.Focused && is_selected && tab.ShowFocusCues)
ControlPaint.DrawFocusRectangle (dc, bounds);
return 0;
}
static VisualStyleElement GetVisualStyleElement (TabControl tabControl, TabPage tabPage, bool selected)
{
bool top_edge = tabPage.Row == tabControl.RowCount;
int tab_page_index = tabControl.TabPages.IndexOf (tabPage);
bool left_edge = true;
int index;
for (index = tabControl.SliderPos; index < tab_page_index; index++)
if (tabControl.TabPages [index].Row == tabPage.Row) {
left_edge = false;
break;
}
bool right_edge = true;
for (index = tab_page_index; index < tabControl.TabCount; index++)
if (tabControl.TabPages [index].Row == tabPage.Row) {
right_edge = false;
break;
}
if (!tabPage.Enabled)
#region Disabled
if (top_edge)
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TopTabItem.Disabled;
else
return VisualStyleElement.Tab.TopTabItemLeftEdge.Disabled;
else
if (right_edge)
return VisualStyleElement.Tab.TopTabItemRightEdge.Disabled;
else
return VisualStyleElement.Tab.TopTabItem.Disabled;
else
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TabItem.Disabled;
else
return VisualStyleElement.Tab.TabItemLeftEdge.Disabled;
else
if (right_edge)
return VisualStyleElement.Tab.TabItemRightEdge.Disabled;
else
return VisualStyleElement.Tab.TabItem.Disabled;
#endregion
else if (selected)
#region Pressed
if (top_edge)
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TopTabItem.Pressed;
else
return VisualStyleElement.Tab.TopTabItemLeftEdge.Pressed;
else
if (right_edge)
return VisualStyleElement.Tab.TopTabItemRightEdge.Pressed;
else
return VisualStyleElement.Tab.TopTabItem.Pressed;
else
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TabItem.Pressed;
else
return VisualStyleElement.Tab.TabItemLeftEdge.Pressed;
else
if (right_edge)
return VisualStyleElement.Tab.TabItemRightEdge.Pressed;
else
return VisualStyleElement.Tab.TabItem.Pressed;
#endregion
else if (tabControl.EnteredTabPage == tabPage)
#region Hot
if (top_edge)
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TopTabItem.Hot;
else
return VisualStyleElement.Tab.TopTabItemLeftEdge.Hot;
else
if (right_edge)
return VisualStyleElement.Tab.TopTabItemRightEdge.Hot;
else
return VisualStyleElement.Tab.TopTabItem.Hot;
else
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TabItem.Hot;
else
return VisualStyleElement.Tab.TabItemLeftEdge.Hot;
else
if (right_edge)
return VisualStyleElement.Tab.TabItemRightEdge.Hot;
else
return VisualStyleElement.Tab.TabItem.Hot;
#endregion
else
#region Normal
if (top_edge)
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TopTabItemBothEdges.Normal;
else
return VisualStyleElement.Tab.TopTabItemLeftEdge.Normal;
else
if (right_edge)
return VisualStyleElement.Tab.TopTabItemRightEdge.Normal;
else
return VisualStyleElement.Tab.TopTabItem.Normal;
else
if (left_edge)
if (right_edge)
return VisualStyleElement.Tab.TabItemBothEdges.Normal;
else
return VisualStyleElement.Tab.TabItemLeftEdge.Normal;
else
if (right_edge)
return VisualStyleElement.Tab.TabItemRightEdge.Normal;
else
return VisualStyleElement.Tab.TabItem.Normal;
#endregion
}
public override bool HasHotElementStyles (TabControl tabControl)
{
if (!ShouldPaint (tabControl))
return base.HasHotElementStyles (tabControl);
return true;
}
protected override void DrawScrollButton (Graphics dc, Rectangle bounds, Rectangle clippingArea, ScrollButton button, PushButtonState state)
{
if (!ThemeVisualStyles.RenderClientAreas) {
base.DrawScrollButton (dc, bounds, clippingArea, button, state);
return;
}
VisualStyleElement element;
if (button == ScrollButton.Left)
switch (state) {
case PushButtonState.Hot:
element = VisualStyleElement.Spin.DownHorizontal.Hot;
break;
case PushButtonState.Pressed:
element = VisualStyleElement.Spin.DownHorizontal.Pressed;
break;
default:
element = VisualStyleElement.Spin.DownHorizontal.Normal;
break;
}
else
switch (state) {
case PushButtonState.Hot:
element = VisualStyleElement.Spin.UpHorizontal.Hot;
break;
case PushButtonState.Pressed:
element = VisualStyleElement.Spin.UpHorizontal.Pressed;
break;
default:
element = VisualStyleElement.Spin.UpHorizontal.Normal;
break;
}
if (!VisualStyleRenderer.IsElementDefined (element)) {
if (button == ScrollButton.Left)
switch (state) {
case PushButtonState.Hot:
element = VisualStyleElement.ScrollBar.ArrowButton.LeftHot;
break;
case PushButtonState.Pressed:
element = VisualStyleElement.ScrollBar.ArrowButton.LeftPressed;
break;
default:
element = VisualStyleElement.ScrollBar.ArrowButton.LeftNormal;
break;
}
else
switch (state) {
case PushButtonState.Hot:
element = VisualStyleElement.ScrollBar.ArrowButton.RightHot;
break;
case PushButtonState.Pressed:
element = VisualStyleElement.ScrollBar.ArrowButton.RightPressed;
break;
default:
element = VisualStyleElement.ScrollBar.ArrowButton.RightNormal;
break;
}
if (!VisualStyleRenderer.IsElementDefined (element)) {
base.DrawScrollButton (dc, bounds, clippingArea, button, state);
return;
}
}
new VisualStyleRenderer (element).DrawBackground (dc, bounds, clippingArea);
}
}
}
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