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457 lines
10 KiB
Objective-C
457 lines
10 KiB
Objective-C
/*
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GormViewKnobs.m
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Copyright (C) 1999 Free Software Foundation, Inc.
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Author: Gerrit van Dyk <gerritvd@decimax.com>
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Date: 1999
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Modified and extended by: Richard Frith-Macdonald <richard@brainstorm.co.uk>
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This file is part of the GNUstep Interface Modeller Application.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; see the file COPYING.LIB.
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If not, write to the Free Software Foundation,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "GormViewKnobs.h"
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#include <math.h>
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static NSInteger KNOB_WIDTH = 0.0;
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static NSInteger KNOB_HEIGHT = 0.0;
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#define MINSIZE 5.0
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static NSRect *blackRectList = NULL;
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static int blackRectSize = 0;
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static int blackRectCount = 0;
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static NSRect *fgcolorRectList= NULL;
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static int fgcolorRectSize = 0;
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static int fgcolorRectCount= 0;
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static void _fastKnobFill(NSRect aRect,BOOL isBlack);
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static void _drawKnobsForRect(NSRect aRect,BOOL isBlack);
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static void
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calcKnobSize(void)
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{
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NSString *value;
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float w = 2.0;
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float h = 2.0;
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value = [[NSUserDefaults standardUserDefaults] objectForKey: @"KnobWidth"];
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if (value != nil)
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{
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w = floor([value floatValue] / 2.0);
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}
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value = [[NSUserDefaults standardUserDefaults] objectForKey: @"KnobHeight"];
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if (value != nil)
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{
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h = floor([value floatValue] / 2.0);
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}
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w = MAX(w, 1.0);
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h = MAX(h, 1.0);
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KNOB_WIDTH = w * 2.0 + 1.0; // Size must be odd */
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KNOB_HEIGHT = h * 2.0 + 1.0;
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}
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void
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GormShowFastKnobFills(void)
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{
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if (blackRectCount)
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{
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[[NSColor blackColor] set];
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NSRectFillList(blackRectList, blackRectCount);
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}
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if (fgcolorRectCount)
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{
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[[NSColor redColor] set];
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NSRectFillList(fgcolorRectList, fgcolorRectCount);
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}
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blackRectCount = 0;
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fgcolorRectCount = 0;
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}
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static void
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_showLitKnobForRect(NSRect frame, IBKnobPosition aKnob)
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{
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float dx, dy;
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BOOL oddx, oddy;
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NSRect r;
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if (!KNOB_WIDTH)
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{
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calcKnobSize();
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}
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dx = NSWidth(frame) / 2.0;
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dy = NSHeight(frame) / 2.0;
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oddx = (floor(dx) != dx);
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oddy = (floor(dy) != dy);
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frame.size.width = KNOB_WIDTH;
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frame.size.height = KNOB_HEIGHT;
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frame.origin.x -= ((KNOB_WIDTH - 1.0) / 2.0);
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frame.origin.y -= ((KNOB_HEIGHT - 1.0) / 2.0);
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// Initialize r to keep the compiler happy
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r = frame;
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if (aKnob == IBBottomLeftKnobPosition)
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r = frame;
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frame.origin.y += dy;
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if (oddy)
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frame.origin.y -= 0.5;
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if (aKnob == IBMiddleLeftKnobPosition)
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r = frame;
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frame.origin.y += dy;
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if (oddy)
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frame.origin.y += 0.5;
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if (aKnob == IBTopLeftKnobPosition)
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r = frame;
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frame.origin.x += dx;
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if (oddx)
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frame.origin.x -= 0.5;
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if (aKnob == IBTopMiddleKnobPosition)
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r = frame;
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frame.origin.x += dx;
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if (oddx)
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frame.origin.x += 0.5;
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if (aKnob == IBTopRightKnobPosition)
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r = frame;
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frame.origin.y -= dy;
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if (oddy)
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frame.origin.y -= 0.5;
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if (aKnob == IBMiddleRightKnobPosition)
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r = frame;
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frame.origin.y -= dy;
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if (oddy)
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frame.origin.y += 0.5;
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if (aKnob == IBBottomRightKnobPosition)
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r = frame;
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frame.origin.x -= dx;
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if (oddx)
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frame.origin.x += 0.5;
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if (aKnob == IBBottomMiddleKnobPosition)
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r = frame;
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r.origin.x += 1.0;
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r.origin.y -= 1.0;
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[[NSColor blackColor] set];
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[NSBezierPath fillRect: r];
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r.origin.x -= 1.0;
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r.origin.y += 1.0;
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[[NSColor whiteColor] set];
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[NSBezierPath fillRect: r];
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}
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void
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GormShowFrameWithKnob(NSRect aRect, IBKnobPosition aKnob)
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{
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NSRect r = aRect;
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/*
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* We draw a wire-frame around the rectangle.
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*/
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r.origin.x -= 0.5;
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r.origin.y -= 0.5;
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r.size.width += 1.0;
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r.size.height += 1.0;
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[[NSColor blackColor] set];
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[NSBezierPath strokeRect: r];
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if (aKnob != IBNoneKnobPosition)
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{
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/*
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* NB. we use the internal rectangle for calculating the knob position.
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*/
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_showLitKnobForRect(aRect, aKnob);
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}
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}
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void
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GormDrawKnobsForRect(NSRect aRect)
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{
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NSRect r;
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r.origin.x = floor(NSMinX(aRect));
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r.origin.y = floor(NSMinY(aRect));
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r.size.width = floor(NSMaxX(aRect) + 0.99) - NSMinX(r);
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r.size.height = floor(NSMaxY(aRect) + 0.99) - NSMinY(r);
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r.origin.x += 1.0;
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r.origin.y -= 1.0;
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_drawKnobsForRect(r, YES);
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r.origin.x = floor(NSMinX(aRect));
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r.origin.y = floor(NSMinY(aRect));
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r.size.width = floor(NSMaxX(aRect) + 0.99) - NSMinX(r);
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r.size.height = floor(NSMaxY(aRect) + 0.99) - NSMinY(r);
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_drawKnobsForRect(r, NO);
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}
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/* Draw these around an NSBox whose contents are being edited.
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*/
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void
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GormDrawOpenKnobsForRect(NSRect aRect)
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{
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NSRect r;
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r.origin.x = floor(NSMinX(aRect));
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r.origin.y = floor(NSMinY(aRect));
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r.size.width = floor(NSMaxX(aRect) + 0.99) - NSMinX(r);
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r.size.height = floor(NSMaxY(aRect) + 0.99) - NSMinY(r);
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_drawKnobsForRect(r, YES);
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}
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IBKnobPosition
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GormKnobHitInRect(NSRect aFrame, NSPoint p)
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{
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NSRect eb;
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NSRect knob;
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float dx, dy;
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BOOL oddx, oddy;
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eb = GormExtBoundsForRect(aFrame);
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if (!NSMouseInRect(p, eb, NO))
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{
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return IBNoneKnobPosition;
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}
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knob = aFrame;
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dx = NSWidth(knob) / 2.0;
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dy = NSHeight(knob) / 2.0;
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oddx = (floor(dx) != dx);
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oddy = (floor(dy) != dy);
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knob.size.width = KNOB_WIDTH;
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knob.size.height = KNOB_HEIGHT;
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knob.origin.x -= ((KNOB_WIDTH - 1.0) / 2.0);
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knob.origin.y -= ((KNOB_HEIGHT - 1.0) / 2.0);
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBBottomLeftKnobPosition);
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}
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knob.origin.y += dy;
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if (oddy)
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{
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knob.origin.y -= 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBMiddleLeftKnobPosition);
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}
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knob.origin.y += dy;
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if (oddy)
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{
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knob.origin.y += 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBTopLeftKnobPosition);
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}
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knob.origin.x += dx;
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if (oddx)
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{
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knob.origin.x -= 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBTopMiddleKnobPosition);
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}
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knob.origin.x += dx;
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if (oddx)
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{
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knob.origin.x += 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBTopRightKnobPosition);
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}
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knob.origin.y -= dy;
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if (oddy)
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{
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knob.origin.y -= 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBMiddleRightKnobPosition);
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}
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knob.origin.y -= dy;
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if (oddy)
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{
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knob.origin.y += 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBBottomRightKnobPosition);
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}
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knob.origin.x -= dx;
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if (oddx)
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{
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knob.origin.x += 0.5;
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}
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if (NSMouseInRect(p, knob, NO))
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{
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return(IBBottomMiddleKnobPosition);
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}
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return IBNoneKnobPosition;
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}
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NSRect
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GormExtBoundsForRect(NSRect aRect)
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{
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NSRect returnRect;
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if (NSWidth(aRect) < 0.0)
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{
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returnRect.origin.x = NSMaxX(aRect);
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returnRect.size.width = - NSWidth(aRect);
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}
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else
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{
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returnRect.origin.x = NSMinX(aRect);
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returnRect.size.width = NSWidth(aRect);
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}
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if (aRect.size.height < 0.0)
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{
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returnRect.origin.y = NSMaxY(aRect);
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returnRect.size.height = - NSHeight(aRect);
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}
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else
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{
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returnRect.origin.y = NSMinY(aRect);
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returnRect.size.height = NSHeight(aRect);
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}
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returnRect.size.width = MAX(1.0, NSWidth(returnRect));
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returnRect.size.height = MAX(1.0, NSHeight(returnRect));
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returnRect = NSInsetRect(returnRect,
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- ((KNOB_WIDTH - 1.0) + 1.0), - ((KNOB_HEIGHT - 1.0) + 1.0));
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return NSIntegralRect(returnRect);
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}
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static void
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_fastKnobFill(NSRect aRect, BOOL isBlack)
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{
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if (isBlack)
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{
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if (!blackRectList)
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{
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blackRectSize = 16;
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blackRectList = NSZoneMalloc(NSDefaultMallocZone(),
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blackRectSize * sizeof(NSRect));
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}
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else
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{
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if (blackRectCount >= blackRectSize)
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{
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while (blackRectCount >= blackRectSize)
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{
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blackRectSize <<= 1;
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}
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blackRectList = NSZoneRealloc(NSDefaultMallocZone(), blackRectList,
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blackRectSize * sizeof(NSRect));
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}
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}
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blackRectList[blackRectCount++] = aRect;
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}
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else
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{
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if (!fgcolorRectList)
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{
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fgcolorRectSize = 16;
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fgcolorRectList = NSZoneMalloc(NSDefaultMallocZone(),
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fgcolorRectSize * sizeof(NSRect));
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}
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else
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{
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if (fgcolorRectCount >= fgcolorRectSize)
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{
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while (fgcolorRectCount >= fgcolorRectSize)
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{
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fgcolorRectSize <<= 1;
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}
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fgcolorRectList = NSZoneRealloc(NSDefaultMallocZone(), fgcolorRectList,
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fgcolorRectSize * sizeof(NSRect));
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}
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}
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fgcolorRectList[fgcolorRectCount++] = aRect;
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}
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}
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static void
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_drawKnobsForRect(NSRect knob, BOOL isBlack)
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{
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float dx, dy;
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BOOL oddx, oddy;
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if (!KNOB_WIDTH)
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{
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calcKnobSize();
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}
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dx = NSWidth(knob) / 2.0;
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dy = NSHeight(knob) / 2.0;
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oddx = (floor(dx) != dx);
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oddy = (floor(dy) != dy);
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knob.size.width = KNOB_WIDTH;
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knob.size.height = KNOB_HEIGHT;
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knob.origin.x -= ((KNOB_WIDTH - 1.0) / 2.0);
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knob.origin.y -= ((KNOB_HEIGHT - 1.0) / 2.0);
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_fastKnobFill(knob, isBlack);
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knob.origin.y += dy;
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if (oddy)
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{
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knob.origin.y -= 0.5;
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}
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_fastKnobFill(knob, isBlack);
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knob.origin.y += dy;
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if (oddy)
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{
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knob.origin.y += 0.5;
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}
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_fastKnobFill(knob, isBlack);
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knob.origin.x += dx;
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if (oddx)
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{
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knob.origin.x -= 0.5;
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}
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_fastKnobFill(knob, isBlack);
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knob.origin.x += dx;
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if (oddx)
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{
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knob.origin.x += 0.5;
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}
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_fastKnobFill(knob, isBlack);
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knob.origin.y -= dy;
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if (oddy)
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{
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knob.origin.y -= 0.5;
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}
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_fastKnobFill(knob, isBlack);
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knob.origin.y -= dy;
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if (oddy)
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{
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knob.origin.y += 0.5;
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}
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_fastKnobFill(knob, isBlack);
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knob.origin.x -= dx;
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if (oddx)
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{
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knob.origin.x += 0.5;
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}
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_fastKnobFill(knob, isBlack);
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}
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