/** GSDrawFunctions Useful/configurable drawing functions Copyright (C) 2004 Free Software Foundation, Inc. Author: Adam Fedor Date: Jan 2004 This file is part of the GNU Objective C User interface library. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ #include "GNUstepGUI/GSDrawFunctions.h" #include "AppKit/NSColor.h" #include "AppKit/NSGraphics.h" #include "AppKit/NSView.h" #include "AppKit/PSOperators.h" /** Class Description

This is a simple class used for encapsulating common drawing behaviors. These methods standardize drawing of buttons, borders and other common GUI elements. The drawing functions are encapsulated in a class to allow overriding of the methods so that these elements can be drawn in different ways (e.g. with themes).

The default implementation uses the standard configurable colors defined in NSColor, such as controlLightHighlightColor, controlShadowColor and controlDarkShadowColor.

*/ @implementation GSDrawFunctions /** Draw a button border */ + (NSRect) drawButton: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge}; // These names are role names not the actual colours NSColor *black = [NSColor controlDarkShadowColor]; NSColor *dark = [NSColor controlShadowColor]; NSColor *white = [NSColor controlLightHighlightColor]; NSColor *colors[] = {black, black, white, white, dark, dark}; if ([[NSView focusView] isFlipped] == YES) { return NSDrawColorTiledRects(border, clip, dn_sides, colors, 6); } else { return NSDrawColorTiledRects(border, clip, up_sides, colors, 6); } } /** Draw a "dark" button border (used in tableviews) */ + (NSRect) drawDarkButton: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge}; // These names are role names not the actual colours NSColor *black = [NSColor controlDarkShadowColor]; NSColor *white = [NSColor controlHighlightColor]; NSColor *colors[] = {black, black, white, white}; if ([[NSView focusView] isFlipped] == YES) { return NSDrawColorTiledRects(border, clip, dn_sides, colors, 4); } else { return NSDrawColorTiledRects(border, clip, up_sides, colors, 4); } } /** Draw a dark bezel border */ + (NSRect) drawDarkBezel: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge}; // These names are role names not the actual colours NSColor *black = [NSColor controlDarkShadowColor]; NSColor *dark = [NSColor controlShadowColor]; NSColor *light = [NSColor controlColor]; NSColor *white = [NSColor controlLightHighlightColor]; NSColor *colors[] = {white, white, dark, dark, black, black, light, light}; NSRect rect; if ([[NSView focusView] isFlipped] == YES) { rect = NSDrawColorTiledRects(border, clip, dn_sides, colors, 8); [dark set]; PSrectfill(NSMinX(border) + 1., NSMinY(border) - 2., 1., 1.); PSrectfill(NSMaxX(border) - 2., NSMaxY(border) + 1., 1., 1.); } else { rect = NSDrawColorTiledRects(border, clip, up_sides, colors, 8); [dark set]; PSrectfill(NSMinX(border) + 1., NSMinY(border) + 1., 1., 1.); PSrectfill(NSMaxX(border) - 2., NSMaxY(border) - 2., 1., 1.); } return rect; } /** Draw a light bezel border */ + (NSRect) drawLightBezel: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge}; // These names are role names not the actual colours NSColor *dark = [NSColor controlShadowColor]; NSColor *light = [NSColor controlColor]; NSColor *white = [NSColor controlLightHighlightColor]; NSColor *colors[] = {white, white, dark, dark, light, light, dark, dark}; if ([[NSView focusView] isFlipped] == YES) { return NSDrawColorTiledRects(border, clip, dn_sides, colors, 8); } else { return NSDrawColorTiledRects(border, clip, up_sides, colors, 8); } } /** Draw a white bezel border */ + (NSRect) drawWhiteBezel: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxYEdge, NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge, NSMinXEdge}; NSRectEdge dn_sides[] = {NSMinYEdge, NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge, NSMinXEdge}; // These names are role names not the actual colours NSColor *dark = [NSColor controlShadowColor]; NSColor *light = [NSColor controlColor]; NSColor *white = [NSColor controlLightHighlightColor]; NSColor *colors[] = {dark, white, white, dark, dark, light, light, dark}; if ([[NSView focusView] isFlipped] == YES) { return NSDrawColorTiledRects(border, clip, dn_sides, colors, 8); } else { return NSDrawColorTiledRects(border, clip, up_sides, colors, 8); } } /** Draw a grey bezel border */ + (NSRect) drawGrayBezel: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge}; // These names are role names not the actual colours NSColor *black = [NSColor controlDarkShadowColor]; NSColor *dark = [NSColor controlShadowColor]; NSColor *light = [NSColor controlColor]; NSColor *white = [NSColor controlLightHighlightColor]; NSColor *colors[] = {white, white, dark, dark, light, light, black, black}; NSRect rect; if ([[NSView focusView] isFlipped] == YES) { rect = NSDrawColorTiledRects(border, clip, dn_sides, colors, 8); [dark set]; PSrectfill(NSMinX(border) + 1., NSMaxY(border) - 2., 1., 1.); PSrectfill(NSMaxX(border) - 2., NSMinY(border) + 1., 1., 1.); } else { rect = NSDrawColorTiledRects(border, clip, up_sides, colors, 8); [dark set]; PSrectfill(NSMinX(border) + 1., NSMinY(border) + 1., 1., 1.); PSrectfill(NSMaxX(border) - 2., NSMaxY(border) - 2., 1., 1.); } return rect; } /** Draw a groove border */ + (NSRect) drawGroove: (NSRect)border : (NSRect)clip { // go clockwise from the top twice -- makes the groove come out right NSRectEdge up_sides[] = {NSMaxYEdge, NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge, NSMinXEdge}; NSRectEdge dn_sides[] = {NSMinYEdge, NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge, NSMinXEdge}; // These names are role names not the actual colours NSColor *dark = [NSColor controlShadowColor]; NSColor *white = [NSColor controlLightHighlightColor]; NSColor *colors[] = {dark, white, white, dark, white, dark, dark, white}; if ([[NSView focusView] isFlipped] == YES) { return NSDrawColorTiledRects(border, clip, dn_sides, colors, 8); } else { return NSDrawColorTiledRects(border, clip, up_sides, colors, 8); } } /** Draw a frame photo border. Used in NSImageView. */ + (NSRect) drawFramePhoto: (NSRect)border : (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge, NSMaxXEdge, NSMinYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge, NSMaxXEdge, NSMaxYEdge}; // These names are role names not the actual colours NSColor *black = [NSColor controlDarkShadowColor]; NSColor *dark = [NSColor controlShadowColor]; NSColor *colors[] = {dark, dark, dark, dark, black,black}; if ([[NSView focusView] isFlipped] == YES) { return NSDrawColorTiledRects(border, clip, dn_sides, colors, 6); } else { return NSDrawColorTiledRects(border, clip, up_sides, colors, 6); } } /** Draw a gradient border. */ + (NSRect) drawGradientBorder: (NSGradientType)gradientType inRect: (NSRect)border withClip: (NSRect)clip { NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge, NSMinXEdge, NSMaxYEdge}; NSRectEdge dn_sides[] = {NSMaxXEdge, NSMaxYEdge, NSMinXEdge, NSMinYEdge}; NSColor *black = [NSColor controlDarkShadowColor]; NSColor *dark = [NSColor controlShadowColor]; NSColor *light = [NSColor controlColor]; NSColor **colors; NSColor *concaveWeak[] = {dark, dark, light, light}; NSColor *concaveStrong[] = {black, black, light, light}; NSColor *convexWeak[] = {light, light, dark, dark}; NSColor *convexStrong[] = {light, light, black, black}; NSRect rect; switch (gradientType) { case NSGradientConcaveWeak: colors = concaveWeak; break; case NSGradientConcaveStrong: colors = concaveStrong; break; case NSGradientConvexWeak: colors = convexWeak; break; case NSGradientConvexStrong: colors = convexStrong; break; case NSGradientNone: default: return border; } if ([[NSView focusView] isFlipped] == YES) { rect = NSDrawColorTiledRects(border, clip, dn_sides, colors, 4); } else { rect = NSDrawColorTiledRects(border, clip, up_sides, colors, 4); } return rect; } @end