126 lines
2.8 KiB
Ucode
126 lines
2.8 KiB
Ucode
Class KFGUI_ScrollBarBase extends KFGUI_Clickable
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abstract;
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`include(Build.uci)
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`include(Logger.uci)
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var() int MinRange, MaxRange, ScrollStride, PageStep;
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var() float ButtonScale; // Button width (scaled by default font height).
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var int CurrentScroll;
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// In-runtime values.
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var transient float CalcButtonScale;
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var transient int SliderScale, ButtonOffset, GrabbedOffset;
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var transient bool bGrabbedScroller;
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var bool bVertical, bHideScrollbar;
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final function UpdateScrollSize(int Current, int MxRange, int Stride, int StepStride, optional int MnRange)
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{
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MaxRange = MxRange;
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MinRange = MnRange;
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ScrollStride = Stride;
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PageStep = StepStride;
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SetValue(Current);
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}
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final function AddValue(int V)
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{
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SetValue(CurrentScroll+V);
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}
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final function SetValue(int V)
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{
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CurrentScroll = Clamp((V / ScrollStride) * ScrollStride, MinRange, MaxRange);
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OnScrollChange(Self, CurrentScroll);
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}
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final function int GetValue()
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{
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return CurrentScroll;
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}
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Delegate OnScrollChange(KFGUI_ScrollBarBase Sender, int Value);
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// Get UI width.
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function float GetWidth()
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{
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CalcButtonScale = ButtonScale*Owner.CurrentStyle.DefaultHeight;
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return CalcButtonScale / (bVertical ? InputPos[2] : InputPos[3]);
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}
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function PreDraw()
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{
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// Auto scale to match width to screen size.
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if (bVertical)
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XSize = GetWidth();
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else YSize = GetWidth();
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Super.PreDraw();
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}
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function DrawMenu()
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{
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if (!bHideScrollbar)
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{
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Owner.CurrentStyle.RenderScrollBar(Self);
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}
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}
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function MouseClick(bool bRight)
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{
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if (bRight || bDisabled)
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return;
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bPressedDown = true;
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PlayMenuSound(MN_ClickButton);
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if (bVertical)
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{
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if (Owner.MousePosition.Y >= (CompPos[1]+ButtonOffset) && Owner.MousePosition.Y <= (CompPos[1]+ButtonOffset+SliderScale) ) // Grabbed scrollbar!
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{
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GrabbedOffset = Owner.MousePosition.Y - (CompPos[1]+ButtonOffset);
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bGrabbedScroller = true;
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GetInputFocus();
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}
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else if (Owner.MousePosition.Y < (CompPos[1]+ButtonOffset) ) // Page up.
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AddValue(-PageStep);
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else AddValue(PageStep);
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}
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else
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{
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if (Owner.MousePosition.X >= (CompPos[0]+ButtonOffset) && Owner.MousePosition.X <= (CompPos[0]+ButtonOffset+SliderScale) ) // Grabbed scrollbar!
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{
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GrabbedOffset = Owner.MousePosition.X - (CompPos[0]+ButtonOffset);
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bGrabbedScroller = true;
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GetInputFocus();
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}
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else if (Owner.MousePosition.X < (CompPos[0]+ButtonOffset) ) // Page left.
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AddValue(-PageStep);
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else AddValue(PageStep);
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}
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}
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function MouseRelease(bool bRight)
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{
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if (!bRight)
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DropInputFocus();
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}
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function LostInputFocus()
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{
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bGrabbedScroller = false;
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bPressedDown = false;
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}
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function ScrollMouseWheel(bool bUp)
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{
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if (bDisabled)
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return;
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if (bUp)
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AddValue(-ScrollStride);
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else AddValue(ScrollStride);
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}
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function SetVisibility(bool Visible)
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{
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bHideScrollbar = Visible;
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}
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defaultproperties
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{
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MaxRange=100
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ScrollStride=1
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PageStep=10
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ButtonScale=1
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} |