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Aminet 44
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Aminet 44 (2001)(GTI - Schatztruhe)[!][Aug 2001].iso
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gtlayout.lha
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LTP_Draw.c
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C/C++ Source or Header
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1999-01-02
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8KB
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392 lines
/*
** GadTools layout toolkit
**
** Copyright © 1993-1999 by Olaf `Olsen' Barthel
** Freely distributable.
**
** :ts=4
*/
#ifndef _GTLAYOUT_GLOBAL_H
#include "gtlayout_global.h"
#endif
/*****************************************************************************/
#include <graphics/gfxmacros.h>
#include <stdarg.h>
/*****************************************************************************/
#include "Assert.h"
/*****************************************************************************/
VOID
LTP_ResetRenderInfo(struct RastPort *RPort)
{
SetAfPt(RPort,NULL,0);
SetDrPt(RPort,0xFFFF);
SetWrMsk(RPort,0xFF);
}
/*****************************************************************************/
VOID
LTP_GhostBox(struct RastPort *RPort,LONG Left,LONG Top,LONG Width,LONG Height,UWORD Pen)
{
STATIC const UWORD Ghosting[2] = { 0x4444,0x1111 };
LTP_SetPens(RPort,Pen,0,JAM1);
SetAfPt(RPort,(UWORD *)Ghosting,1);
LTP_FillBox(RPort,Left,Top,Width,Height);
SetAfPt(RPort,NULL,0);
}
/*****************************************************************************/
VOID
LTP_EraseBox(struct RastPort *rp,LONG left,LONG top,LONG width,LONG height)
{
if(width > 0 && height > 0)
EraseRect(rp,left,top,left + width - 1,top + height - 1);
}
/*****************************************************************************/
VOID
LTP_FillBox(struct RastPort *rp,LONG left,LONG top,LONG width,LONG height)
{
if(width > 0 && height > 0)
RectFill(rp,left,top,left + width - 1,top + height - 1);
}
/*****************************************************************************/
VOID
LTP_DrawLine(struct RastPort *rp,LONG x0,LONG y0,LONG x1,LONG y1)
{
/* Recent studies reveal that for horizontal and
* vertical lines RectFill() is in most cases faster
* than Move()..Draw(). This only works if we don't
* rely upon rp->cp_x/cp_y being updated by Draw().
* As of v26.11 the library no longer does this.
*/
if(x0 == x1 || y0 == y1)
{
// If there only were a `C' primitive to swap
// two variables...
if(x0 > x1)
x0 ^= x1, x1 ^= x0, x0 ^= x1;
if(y0 > y1)
y0 ^= y1, y1 ^= y0, y0 ^= y1;
RectFill(rp,x0,y0,x1,y1);
}
else
{
Move(rp,x0,y0);
Draw(rp,x1,y1);
}
}
VOID
LTP_PolyDraw(struct RastPort *rp,LONG totalPairs,LONG left,LONG top,...)
{
LONG x0,y0,x1,y1;
LONG *pairs;
va_list args;
x0 = left;
y0 = top;
va_start(args,top);
pairs = (LONG *)args;
while(--totalPairs > 0)
{
x1 = *pairs++;
y1 = *pairs++;
LTP_DrawLine(rp,x0,y0,x1,y1);
x0 = x1;
y0 = y1;
}
va_end(args);
}
/*****************************************************************************/
VOID
LTP_RenderBevel(struct RastPort *rp,UWORD *pens,LONG left,LONG top,LONG width,LONG height,BOOL recessed,WORD thickness)
{
LONG pen1,pen2;
if(recessed)
{
pen1 = SHADOWPEN;
pen2 = SHINEPEN;
}
else
{
pen1 = SHINEPEN;
pen2 = SHADOWPEN;
}
LTP_SetAPen(rp,pens[pen1]);
LTP_PolyDraw(rp,3,
left,top + height - 1,
left,top,
left + width - 2,top);
if(thickness > 1)
{
LTP_DrawLine(rp,left + 1,top + 1,left + 1,top + height - 2);
if(thickness > 2)
{
LTP_PolyDraw(rp,3,
left + 2,top + height - 3,
left + 2,top + 1,
left + width - 3,top + 1);
}
}
LTP_SetAPen(rp,pens[pen2]);
LTP_PolyDraw(rp,3,
left + width - 1,top,
left + width - 1,top + height - 1,
left + 1,top + height - 1);
if(thickness > 1)
{
LTP_DrawLine(rp,left + width - 2,top + height - 2,left + width - 2,top + 1);
if(thickness > 2)
{
LTP_PolyDraw(rp,3,
left + width - 3,top + 2,
left + width - 3,top + height - 2,
left + 2,top + height - 2);
}
}
}
VOID
LTP_DrawBevel(LayoutHandle *handle,LONG left,LONG top,LONG width,LONG height)
{
if(handle->BevelImage)
{
SetAttrs(handle->BevelImage,
IA_Width, width,
IA_Height, height,
TAG_DONE);
DrawImageState(&handle->RPort,handle->BevelImage,left,top,IDS_NORMAL,handle->DrawInfo);
}
else
LTP_RenderBevel(&handle->RPort,handle->DrawInfo->dri_Pens,left,top,width,height,TRUE,2);
}
VOID
LTP_DrawBevelBox(LayoutHandle *handle,ObjectNode *node)
{
LTP_DrawBevel(handle,node->Left,node->Top,node->Width,node->Height);
}
/*****************************************************************************/
VOID
LTP_PrintText(struct RastPort *rp,STRPTR text,LONG textLen,LONG x,LONG y)
{
Move(rp,x,y + rp->TxBaseline);
Text(rp,text,textLen);
}
/*****************************************************************************/
VOID
LTP_DrawGroove(LayoutHandle *handle,LONG left,LONG top,LONG width,LONG height,LONG from,LONG to)
{
struct RastPort *rp = &handle->RPort;
LONG x,y;
LTP_SetAPen(rp,handle->ShadowPen);
LTP_PolyDraw(rp,5,
left + 1,top + 1,
left + 1,top + height - 2,
left,top + height - 1,
left,top,
from - 2,top);
if(from < to)
{
x = to + 1;
y = top + 1;
}
else
{
x = from - 1;
y = top;
}
LTP_PolyDraw(rp,6,
x,y,
to + 1,top,
left + width - 2,top,
left + width - 3,top + 1,
left + width - 3,top + height - 2,
left + 3,top + height - 2);
LTP_DrawLine(rp,
left + width - 4,top + 2,
left + width - 4,top + height - 3);
LTP_SetAPen(rp,handle->ShinePen);
if(from < to)
{
x = from - 1;
y = top;
}
else
{
x = from + 2;
y = top + 1;
}
LTP_PolyDraw(rp,9,
left + width - 2,top + height - 2,
left + width - 2,top + 1,
left + width - 1,top,
left + width - 1,top + height - 1,
left + 1,top + height - 1,
left + 2,top + height - 2,
left + 2,top + 1,
from - 1,top + 1,
x,y);
LTP_DrawLine(rp,
to + 2,top + 1,
left + width - 4,top + 1);
LTP_DrawLine(rp,
left + 3,top + 2,
left + 3,top + height - 3);
}
/*****************************************************************************/
VOID
LTP_DrawGroupLabel(LayoutHandle *handle,ObjectNode *node)
{
struct RastPort *rp;
LONG left,top,height;
left = node->Left + (node->Width - node->LabelWidth) / 2;
rp = &handle->RPort;
if(node->Label)
{
LONG glyphHeight = handle->GlyphHeight;
top = node->Top + glyphHeight / 2;
height = node->Height - (glyphHeight + handle->InterHeight) / 2;
}
else
{
top = node->Top;
height = node->Height - handle->InterHeight / 2;
}
if(handle->UseGroove)
{
SetAttrs(handle->GrooveImage,
IA_Width, node->Width - handle->GlyphWidth,
IA_Height, height,
TAG_DONE);
DrawImageState(rp,handle->GrooveImage,node->Left + handle->GlyphWidth / 2,top,IDS_NORMAL,handle->DrawInfo);
if(node->Label)
LTP_EraseBox(rp,left,node->Top,node->LabelWidth,handle->GlyphHeight);
}
else
LTP_DrawGroove(handle,node->Left + handle->GlyphWidth / 2,top,node->Width - handle->GlyphWidth,height,left,left + node->LabelWidth - 1);
if(node->Label)
{
LTP_SetPens(rp,handle->DrawInfo->dri_Pens[HIGHLIGHTTEXTPEN],0,JAM1);
LTP_PrintText(rp,node->Label,strlen(node->Label),left + handle->GlyphWidth,node->Top);
}
}
VOID
LTP_DrawGroupFrame(LayoutHandle *handle,ObjectNode *node)
{
if(handle->GrooveImage)
{
SetAttrs(handle->GrooveImage,
IA_Width, node->Width,
IA_Height, node->Height + 4,
TAG_DONE);
DrawImageState(&handle->RPort,handle->GrooveImage,node->Left,node->Top - 4,IDS_NORMAL,handle->DrawInfo);
}
else
{
struct RastPort *rp;
LONG left,top,width,height;
rp = &handle->RPort;
left = node->Left;
top = node->Top - 4;
width = node->Width;
height = node->Height + 4;
LTP_SetAPen(rp,handle->ShinePen);
LTP_PolyDraw(rp,4,
left,top + height - 1,
left,top,
left + 1,top,
left + 1,top + height - 2);
LTP_SetAPen(rp,handle->ShadowPen);
LTP_PolyDraw(rp,5,
left + width - 2,top + height - 2,
left + width - 2,top,
left + width - 1,top,
left + width - 1,top + height - 1,
left + 1,top + height - 1);
}
}