494 lines
17 KiB
C#
494 lines
17 KiB
C#
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////////////////////////////////////////////////////////////////
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// //
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// Neoforce Controls //
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// //
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////////////////////////////////////////////////////////////////
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// //
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// File: ScrollBar.cs //
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// //
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// Version: 0.7 //
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// //
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// Date: 11/09/2010 //
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// //
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// Author: Tom Shane //
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// //
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////////////////////////////////////////////////////////////////
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// //
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// Copyright (c) by Tom Shane //
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// //
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////////////////////////////////////////////////////////////////
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#region //// Using /////////////
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////////////////////////////////////////////////////////////////////////////
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using System;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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////////////////////////////////////////////////////////////////////////////
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#endregion
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namespace TomShane.Neoforce.Controls
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{
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public class ScrollBar: Control
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{
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#region //// Fields ////////////
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////////////////////////////////////////////////////////////////////////////
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private int range = 100;
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private int value = 0;
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private int pageSize = 50;
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private int stepSize = 1;
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private Orientation orientation = Orientation.Vertical;
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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private Button btnMinus = null;
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private Button btnPlus = null;
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private Button btnSlider = null;
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private string strButton = "ScrollBar.ButtonVert";
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private string strRail = "ScrollBar.RailVert";
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private string strSlider = "ScrollBar.SliderVert";
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private string strGlyph = "ScrollBar.GlyphVert";
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private string strMinus = "ScrollBar.ArrowUp";
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private string strPlus = "ScrollBar.ArrowDown";
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////////////////////////////////////////////////////////////////////////////
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#endregion
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#region //// Properties ////////
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////////////////////////////////////////////////////////////////////////////
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public virtual int Value
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{
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get { return this.value; }
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set
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{
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if (this.value != value)
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{
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this.value = value;
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if (this.value < 0) this.value = 0;
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if (this.value > range - pageSize) this.value = range - pageSize;
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Invalidate();
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if (!Suspended) OnValueChanged(new EventArgs());
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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public virtual int Range
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{
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get { return range; }
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set
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{
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if (range != value)
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{
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range = value;
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if (pageSize > range) pageSize = range;
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RecalcParams();
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if (!Suspended) OnRangeChanged(new EventArgs());
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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public virtual int PageSize
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{
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get { return pageSize; }
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set
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{
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if (pageSize != value)
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{
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pageSize = value;
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if (pageSize > range) pageSize = range;
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RecalcParams();
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if (!Suspended) OnPageSizeChanged(new EventArgs());
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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public virtual int StepSize
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{
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get { return stepSize; }
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set
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{
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if (stepSize != value)
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{
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stepSize = value;
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if (!Suspended) OnStepSizeChanged(new EventArgs());
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////
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#endregion
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#region //// Events ////////////
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////////////////////////////////////////////////////////////////////////////
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public event EventHandler ValueChanged;
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public event EventHandler RangeChanged;
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public event EventHandler StepSizeChanged;
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public event EventHandler PageSizeChanged;
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////////////////////////////////////////////////////////////////////////////
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#endregion
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#region //// Construstors //////
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////////////////////////////////////////////////////////////////////////////
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public ScrollBar(Manager manager, Orientation orientation): base(manager)
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{
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this.orientation = orientation;
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CanFocus = false;
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if (orientation == Orientation.Horizontal)
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{
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strButton = "ScrollBar.ButtonHorz";
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strRail = "ScrollBar.RailHorz";
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strSlider = "ScrollBar.SliderHorz";
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strGlyph = "ScrollBar.GlyphHorz";
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strMinus = "ScrollBar.ArrowLeft";
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strPlus = "ScrollBar.ArrowRight";
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MinimumHeight = 16;
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MinimumWidth = 46;
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Width = 64;
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Height = 16;
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}
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else
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{
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strButton = "ScrollBar.ButtonVert";
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strRail = "ScrollBar.RailVert";
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strSlider = "ScrollBar.SliderVert";
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strGlyph = "ScrollBar.GlyphVert";
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strMinus = "ScrollBar.ArrowUp";
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strPlus = "ScrollBar.ArrowDown";
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MinimumHeight = 46;
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MinimumWidth = 16;
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Width = 16;
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Height = 64;
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}
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btnMinus = new Button(Manager);
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btnMinus.Init();
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btnMinus.Text = "";
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btnMinus.MousePress += new MouseEventHandler(ArrowPress);
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btnMinus.CanFocus = false;
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btnSlider = new Button(Manager);
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btnSlider.Init();
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btnSlider.Text = "";
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btnSlider.CanFocus = false;
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btnSlider.MinimumHeight = 16;
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btnSlider.MinimumWidth = 16;
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btnPlus = new Button(Manager);
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btnPlus.Init();
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btnPlus.Text = "";
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btnPlus.MousePress += new MouseEventHandler(ArrowPress);
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btnPlus.CanFocus = false;
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btnSlider.Move += new MoveEventHandler(btnSlider_Move);
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Add(btnMinus);
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Add(btnSlider);
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Add(btnPlus);
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}
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////////////////////////////////////////////////////////////////////////////
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#endregion
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#region //// Methods ///////////
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////////////////////////////////////////////////////////////////////////////
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public void ScrollUp()
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{
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Value -= stepSize;
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if (Value < 0) Value = 0;
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}
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public void ScrollDown()
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{
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Value += stepSize;
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if (Value > range - pageSize) Value = range - pageSize - 1;
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}
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public void ScrollUp(bool alot)
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{
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if (alot)
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{
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Value -= pageSize;
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if (Value < 0) Value = 0;
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}
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else
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ScrollUp();
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}
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public void ScrollDown(bool alot)
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{
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if (alot)
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{
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Value += pageSize;
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if (Value > range - pageSize) Value = range - pageSize - 1;
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}
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else
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ScrollDown();
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}
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////////////////////////////////////////////////////////////////////////////
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public override void Init()
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{
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base.Init();
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SkinControl sc = new SkinControl(btnPlus.Skin);
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sc.Layers["Control"] = new SkinLayer(Skin.Layers[strButton]);
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sc.Layers[strButton].Name = "Control";
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btnPlus.Skin = btnMinus.Skin = sc;
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SkinControl ss = new SkinControl(btnSlider.Skin);
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ss.Layers["Control"] = new SkinLayer(Skin.Layers[strSlider]);
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ss.Layers[strSlider].Name = "Control";
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btnSlider.Skin = ss;
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btnMinus.Glyph = new Glyph(Skin.Layers[strMinus].Image.Resource);
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btnMinus.Glyph.SizeMode = SizeMode.Centered;
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btnMinus.Glyph.Color = Manager.Skin.Controls["Button"].Layers["Control"].Text.Colors.Enabled;
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btnPlus.Glyph = new Glyph(Skin.Layers[strPlus].Image.Resource);
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btnPlus.Glyph.SizeMode = SizeMode.Centered;
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btnPlus.Glyph.Color = Manager.Skin.Controls["Button"].Layers["Control"].Text.Colors.Enabled;
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btnSlider.Glyph = new Glyph(Skin.Layers[strGlyph].Image.Resource);
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btnSlider.Glyph.SizeMode = SizeMode.Centered;
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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protected internal override void InitSkin()
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{
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base.InitSkin();
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Skin = new SkinControl(Manager.Skin.Controls["ScrollBar"]);
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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protected override void DrawControl(Renderer renderer, Rectangle rect, GameTime gameTime)
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{
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RecalcParams();
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SkinLayer bg = Skin.Layers[strRail];
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renderer.DrawLayer(bg, rect, Color.White, bg.States.Enabled.Index);
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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void ArrowPress(object sender, MouseEventArgs e)
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{
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if (e.Button == MouseButton.Left)
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{
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if (sender == btnMinus)
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{
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ScrollUp();
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}
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else if (sender == btnPlus)
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{
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ScrollDown();
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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protected override void OnResize(ResizeEventArgs e)
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{
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base.OnResize(e);
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RecalcParams();
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if (Value + PageSize > Range) Value = Range - PageSize;
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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private void RecalcParams()
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{
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if (btnMinus != null && btnPlus != null && btnSlider != null)
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{
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if (orientation == Orientation.Horizontal)
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{
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btnMinus.Width = Height;
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btnMinus.Height = Height;
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btnPlus.Width = Height;
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btnPlus.Height = Height;
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btnPlus.Left = Width - Height;
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btnPlus.Top = 0;
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btnSlider.Movable = true;
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int size = btnMinus.Width + Skin.Layers[strSlider].OffsetX;
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btnSlider.MinimumWidth = Height;
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int w = (Width - 2 * size);
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btnSlider.Width = (int)Math.Ceiling((pageSize * w) / (float)range);
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btnSlider.Height = Height;
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float px = (float)(Range - PageSize) / (float)(w - btnSlider.Width);
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int pos = (int)(Math.Ceiling(Value / (float)px));
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btnSlider.SetPosition(size + pos, 0);
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if (btnSlider.Left < size) btnSlider.SetPosition(size, 0);
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if (btnSlider.Left + btnSlider.Width + size > Width) btnSlider.SetPosition(Width - size - btnSlider.Width, 0);
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}
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else
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{
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btnMinus.Width = Width;
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btnMinus.Height = Width;
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btnPlus.Width = Width;
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btnPlus.Height = Width;
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btnPlus.Top = Height - Width;
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btnSlider.Movable = true;
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int size = btnMinus.Height + Skin.Layers[strSlider].OffsetY;
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btnSlider.MinimumHeight = Width;
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int h = (Height - 2 * size);
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btnSlider.Height = (int)Math.Ceiling((pageSize * h) / (float)range);
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btnSlider.Width = Width;
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float px = (float)(Range - PageSize) / (float)(h - btnSlider.Height);
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int pos = (int)(Math.Ceiling(Value / (float)px));
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btnSlider.SetPosition(0, size + pos);
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if (btnSlider.Top < size) btnSlider.SetPosition(0, size);
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if (btnSlider.Top + btnSlider.Height + size > Height) btnSlider.SetPosition(0, Height - size - btnSlider.Height);
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////
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void btnSlider_Move(object sender, MoveEventArgs e)
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{
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if (orientation == Orientation.Horizontal)
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{
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int size = btnMinus.Width + Skin.Layers[strSlider].OffsetX;
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btnSlider.SetPosition(e.Left, 0);
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if (btnSlider.Left < size) btnSlider.SetPosition(size, 0);
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if (btnSlider.Left + btnSlider.Width + size > Width) btnSlider.SetPosition(Width - size - btnSlider.Width, 0);
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}
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else
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{
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int size = btnMinus.Height + Skin.Layers[strSlider].OffsetY;
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btnSlider.SetPosition(0, e.Top);
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if (btnSlider.Top < size) btnSlider.SetPosition(0, size);
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if (btnSlider.Top + btnSlider.Height + size > Height) btnSlider.SetPosition(0, Height - size - btnSlider.Height);
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}
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if (orientation == Orientation.Horizontal)
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{
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int size = btnMinus.Width + Skin.Layers[strSlider].OffsetX;
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int w = (Width - 2 * size) - btnSlider.Width;
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float px = (float)(Range - PageSize) / (float)w;
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Value = (int)(Math.Ceiling((btnSlider.Left - size) * px));
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}
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else
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{
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int size = btnMinus.Height + Skin.Layers[strSlider].OffsetY;
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int h = (Height - 2 * size) - btnSlider.Height;
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float px = (float)(Range - PageSize) / (float)h;
|
||
|
|
Value = (int)(Math.Ceiling((btnSlider.Top - size) * px));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
protected override void OnMouseUp(MouseEventArgs e)
|
||
|
|
{
|
||
|
|
btnSlider.Passive = false;
|
||
|
|
base.OnMouseUp(e);
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
protected override void OnMouseDown(MouseEventArgs e)
|
||
|
|
{
|
||
|
|
base.OnMouseDown(e);
|
||
|
|
|
||
|
|
btnSlider.Passive = true;
|
||
|
|
|
||
|
|
if (e.Button == MouseButton.Left)
|
||
|
|
{
|
||
|
|
if (orientation == Orientation.Horizontal)
|
||
|
|
{
|
||
|
|
int pos = e.Position.X;
|
||
|
|
|
||
|
|
if (pos < btnSlider.Left)
|
||
|
|
{
|
||
|
|
ScrollUp(true);
|
||
|
|
}
|
||
|
|
else if (pos >= btnSlider.Left + btnSlider.Width)
|
||
|
|
{
|
||
|
|
ScrollDown(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
int pos = e.Position.Y;
|
||
|
|
|
||
|
|
if (pos < btnSlider.Top)
|
||
|
|
{
|
||
|
|
ScrollUp(true);
|
||
|
|
}
|
||
|
|
else if (pos >= btnSlider.Top + btnSlider.Height)
|
||
|
|
{
|
||
|
|
ScrollDown(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
protected virtual void OnValueChanged(EventArgs e)
|
||
|
|
{
|
||
|
|
if (ValueChanged != null) ValueChanged.Invoke(this, e);
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
protected virtual void OnRangeChanged(EventArgs e)
|
||
|
|
{
|
||
|
|
if (RangeChanged != null) RangeChanged.Invoke(this, e);
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
protected virtual void OnPageSizeChanged(EventArgs e)
|
||
|
|
{
|
||
|
|
if (PageSizeChanged != null) PageSizeChanged.Invoke(this, e);
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
protected virtual void OnStepSizeChanged(EventArgs e)
|
||
|
|
{
|
||
|
|
if (StepSizeChanged != null) StepSizeChanged.Invoke(this, e);
|
||
|
|
}
|
||
|
|
////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#endregion
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|