mirror of
https://git.do.srb2.org/STJr/UltimateZoneBuilder.git
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298 lines
8.1 KiB
C#
298 lines
8.1 KiB
C#
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#region ================== Copyright (c) 2007 Pascal vd Heiden
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/*
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* Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
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* This program is released under GNU General Public License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#endregion
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#region ================== Namespaces
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using System;
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using System.Drawing;
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using System.Windows.Forms;
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using System.Windows.Forms.VisualStyles;
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using System.Drawing.Imaging;
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using System.Drawing.Text;
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#endregion
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namespace CodeImp.DoomBuilder.Controls
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{
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internal class DockersTabsControl : TabControl
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{
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#region ================== Constants
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#endregion
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#region ================== Variables
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private Bitmap tabsimage;
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private int highlighttab;
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#endregion
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#region ================== Constructor
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// Constructor
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public DockersTabsControl()
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{
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if(VisualStyleInformation.IsSupportedByOS && VisualStyleInformation.IsEnabledByUser)
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{
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// Style settings
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this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, false);
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this.SetStyle(ControlStyles.UserPaint, true);
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.Opaque, true);
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this.UpdateStyles();
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}
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highlighttab = -1;
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}
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// Disposer
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protected override void Dispose(bool disposing)
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{
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if(tabsimage != null)
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{
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tabsimage.Dispose();
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tabsimage = null;
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}
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base.Dispose(disposing);
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}
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#endregion
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#region ================== Methods
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// This redraws the tabs
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protected unsafe void RedrawTabs()
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{
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// Determine length and width in pixels
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int tabslength = 0;
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for(int i = 0; i < this.TabPages.Count; i++)
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{
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Rectangle r = this.GetTabRect(i);
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tabslength += r.Height;
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}
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tabslength += 4;
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int tabswidth = this.ItemSize.Height + 2;
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// Dispose old image
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if(tabsimage != null)
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{
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tabsimage.Dispose();
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tabsimage = null;
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}
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if(VisualStyleInformation.IsSupportedByOS && VisualStyleInformation.IsEnabledByUser)
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{
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StringFormat drawformat = new StringFormat();
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drawformat.Alignment = StringAlignment.Center;
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drawformat.HotkeyPrefix = HotkeyPrefix.None;
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drawformat.LineAlignment = StringAlignment.Center;
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// Create images
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tabsimage = new Bitmap(tabswidth, tabslength, PixelFormat.Format32bppArgb);
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Bitmap drawimage = new Bitmap(tabslength, tabswidth, PixelFormat.Format32bppArgb);
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Graphics g = Graphics.FromImage(drawimage);
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// Render the tabs (backwards when right-aligned)
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int posoffset = 0;
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int selectedposoffset = -1;
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int start = (this.Alignment == TabAlignment.Left) ? 0 : (this.TabPages.Count - 1);
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int end = (this.Alignment == TabAlignment.Left) ? this.TabPages.Count : -1;
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int step = (this.Alignment == TabAlignment.Left) ? 1 : -1;
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for(int i = start; i != end; i += step)
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{
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VisualStyleRenderer renderer;
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Rectangle tr = this.GetTabRect(i);
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// Tab selected?
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if(i == this.SelectedIndex)
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{
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// We will draw this later
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selectedposoffset = posoffset;
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}
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else
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{
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if(i == highlighttab)
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renderer = new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Hot);
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else
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renderer = new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Normal);
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// Draw tab
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Rectangle r = new Rectangle(posoffset + 2, 2, tr.Height, tr.Width - 2);
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renderer.DrawBackground(g, r);
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g.DrawString(this.TabPages[i].Text, this.Font, SystemBrushes.ControlText, new RectangleF(r.Location, r.Size), drawformat);
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}
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posoffset += tr.Height;
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}
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// Render the selected tab, because it is slightly larger and overlapping the others
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if(selectedposoffset > -1)
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{
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VisualStyleRenderer renderer = new VisualStyleRenderer(VisualStyleElement.Tab.TabItem.Pressed);
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Rectangle tr = this.GetTabRect(this.SelectedIndex);
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Rectangle r = new Rectangle(selectedposoffset, 0, tr.Height + 4, tr.Width);
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renderer.DrawBackground(g, r);
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g.DrawString(this.TabPages[this.SelectedIndex].Text, this.Font, SystemBrushes.ControlText, new RectangleF(r.X, r.Y, r.Width, r.Height - 2), drawformat);
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}
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// Rotate the image and copy to tabsimage
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BitmapData drawndata = drawimage.LockBits(new Rectangle(0, 0, drawimage.Size.Width, drawimage.Size.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
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BitmapData targetdata = tabsimage.LockBits(new Rectangle(0, 0, tabsimage.Size.Width, tabsimage.Size.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
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int* dd = (int*)drawndata.Scan0.ToPointer();
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int* td = (int*)targetdata.Scan0.ToPointer();
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if(this.Alignment == TabAlignment.Right)
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{
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for(int y = 0; y < drawndata.Height; y++)
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{
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for(int x = 0; x < drawndata.Width; x++)
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{
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td[(drawndata.Width - 1 - x) * targetdata.Width + y] = *dd;
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dd++;
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}
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}
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}
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else
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{
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for(int y = 0; y < drawndata.Height; y++)
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{
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for(int x = 0; x < drawndata.Width; x++)
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{
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td[x * targetdata.Width + (drawndata.Height - 1 - y)] = *dd;
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dd++;
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}
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}
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}
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drawimage.UnlockBits(drawndata);
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tabsimage.UnlockBits(targetdata);
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// Clean up
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g.Dispose();
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drawimage.Dispose();
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}
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}
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#endregion
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#region ================== Events
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// Redrawing needed
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protected override void OnPaint(PaintEventArgs e)
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{
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Point p;
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if(VisualStyleInformation.IsSupportedByOS && VisualStyleInformation.IsEnabledByUser)
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{
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RedrawTabs();
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e.Graphics.Clear(SystemColors.Control);
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if(this.Alignment == TabAlignment.Left)
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{
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p = new Point(0, 0);
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}
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else
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{
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int left = this.ClientSize.Width - tabsimage.Size.Width;
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if(left < 0) left = 0;
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p = new Point(left, 0);
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}
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e.Graphics.DrawImage(tabsimage, p);
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}
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else
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{
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base.OnPaint(e);
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}
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}
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// Mouse moves
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protected override void OnMouseMove(MouseEventArgs e)
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{
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if(VisualStyleInformation.IsSupportedByOS && VisualStyleInformation.IsEnabledByUser)
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{
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int foundindex = -1;
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Rectangle prect = new Rectangle(e.Location, Size.Empty);
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// Check in which tab the mouse is
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for(int i = this.TabPages.Count - 1; i >= 0; i--)
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{
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Rectangle tabrect = this.GetTabRect(i);
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tabrect.Inflate(1, 1);
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if(tabrect.IntersectsWith(prect))
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{
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foundindex = i;
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break;
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}
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}
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// Redraw?
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if(foundindex != highlighttab)
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{
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highlighttab = foundindex;
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this.Invalidate();
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}
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}
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base.OnMouseMove(e);
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}
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// Mouse leaves
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protected override void OnMouseLeave(EventArgs e)
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{
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if(VisualStyleInformation.IsSupportedByOS && VisualStyleInformation.IsEnabledByUser)
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{
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// Redraw?
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if(highlighttab != -1)
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{
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highlighttab = -1;
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this.Invalidate();
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}
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}
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base.OnMouseLeave(e);
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}
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// Tabs don't process keys
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protected override void OnKeyDown(KeyEventArgs ke)
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{
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if(this.Parent is DockersControl)
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{
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// Only absorb the key press when no focused on an input control, otherwise
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// the input controls may not receive certain keys such as delete and arrow keys
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DockersControl docker = (this.Parent as DockersControl);
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if(!docker.IsFocused)
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ke.Handled = true;
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}
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}
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// Tabs don't process keys
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protected override void OnKeyUp(KeyEventArgs e)
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{
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if(this.Parent is DockersControl)
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{
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// Only absorb the key press when no focused on an input control, otherwise
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// the input controls may not receive certain keys such as delete and arrow keys
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DockersControl docker = (this.Parent as DockersControl);
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if(!docker.IsFocused)
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e.Handled = true;
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}
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}
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#endregion
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}
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}
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