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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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<pre class="sourcecodebox">/*
File: CSkToolPalette.c
Contains: Implementation of CSkToolPalette creation and event handling.
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under Apple's
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Copyright (C) 2004 Apple Computer, Inc., All Rights Reserved
*/
#include "CSkToolPalette.h"
#include "CSkConstants.h"
#include "CSkUtils.h"
static WindowRef sToolPaletteWindow = NULL; // make sure we only make a single one!
// ToolPaletteStorage holds the state of whatever the ToolPalette reflects:
// currently selected tool, line drawing specs, and stroke and fill color
// (including alpha: see CGrgba in CSkUtils.h).
struct ToolPaletteStorage
{
int selectedTool;
float lineWidth;
CGLineCap lineCap;
CGLineJoin lineJoin;
int lineStyle;
CGrgba strokeColor;
CGrgba fillColor;
};
typedef struct ToolPaletteStorage ToolPaletteStorage;
//------------------------------------------------------------------------
static ToolPaletteStorage* CreateToolPaletteStorage()
{
const RGBColor rgbBlack = { 0, 0, 0 };
const RGBColor rgbWhite = { 0xFFFF, 0xFFFF, 0xFFFF };
ToolPaletteStorage* tPS = (ToolPaletteStorage*)NewPtrClear( sizeof(ToolPaletteStorage) );
// Set defaults in tPS - these should match the checked menu items in the Nib file
tPS->selectedTool = kLineTool;
tPS->lineWidth = 4.0;
tPS->lineCap = kCGLineCapButt;
tPS->lineJoin = kCGLineJoinMiter;
tPS->lineStyle = kStyleSolid;
ConvertRGBColorToCGrgba(&rgbBlack, 1.0, &tPS->strokeColor);
ConvertRGBColorToCGrgba(&rgbWhite, 1.0, &tPS->fillColor);
return tPS;
}
//------------------------------------------------------------------------ Accessors
int CSkToolPaletteGetTool(WindowRef toolPalette)
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
return tps->selectedTool;
}
float CSkToolPaletteGetLineWidth(WindowRef toolPalette)
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
return tps->lineWidth;
}
CGLineCap CSkToolPaletteGetLineCap(WindowRef toolPalette)
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
return tps->lineCap;
}
CGLineJoin CSkToolPaletteGetLineJoin(WindowRef toolPalette)
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
return tps->lineJoin;
}
int CSkToolPaletteGetLineStyle(WindowRef toolPalette)
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
return tps->lineStyle;
}
CGrgba* CSkToolPaletteGetStrokeColor( WindowRef toolPalette, CGrgba* outStrokeColor )
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
*outStrokeColor = tps->strokeColor;
return outStrokeColor;
}
void CSkToolPaletteSetStrokeColor( WindowRef toolPalette, CGrgba* strokeColor )
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
tps->strokeColor = *strokeColor;
}
CGrgba* CSkToolPaletteGetFillColor( WindowRef toolPalette, CGrgba* outFillColor )
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
*outFillColor = tps->fillColor;
return outFillColor;
}
void CSkToolPaletteSetFillColor( WindowRef toolPalette, CGrgba* fillColor )
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
tps->fillColor = *fillColor;
}
void CSkToolPaletteSetContextState( CGContextRef ctx, WindowRef toolPalette)
{
ToolPaletteStorage* tps = (ToolPaletteStorage*)GetWRefCon(toolPalette);
CGContextSetLineWidth(ctx, tps->lineWidth);
CGContextSetLineCap(ctx, tps->lineCap);
CGContextSetLineJoin(ctx, tps->lineJoin);
CGContextSetStrokeColor( ctx, (float*)&(tps->strokeColor));
CGContextSetFillColor( ctx, (float*)&(tps->fillColor));
}
//-------------------------------------------------
// One of those spots where the code needs to be in sync with the design in the NIB:
static int LineWidthToMenuItem(float lineWidth)
{
const float widths[] = { 0, 1, 2, 4, 8, 16 };
int i = 0;
do {
if (widths[i] == lineWidth)
return (i + 1); // itemNo is 1-based
i += 1;
} while (i < 6);
return 0; // no match
}
//-----------------------------------------------------------------------------------------------------------------------
// Each time the selected object changes, the ToolPalette needs to reflect the current state of the
// selected object. This is accomplished in the "CSkToolPaletteSyncPopups" routine, below.
static void InternalSyncPopups(float lineWidth, CGLineCap lineCap, CGLineJoin lineJoin, int lineStyle)
{
ControlID cntlID = { kControlSignaturePalette, kLineWidthPopup };
short itemNo = LineWidthToMenuItem(lineWidth);
ControlRef control;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlData(control, kControlEntireControl, kControlBevelButtonMenuValueTag, sizeof(itemNo), &itemNo);
cntlID.id = kLineCapPopup;
itemNo = (short)lineCap + 1;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlData( control, kControlEntireControl, kControlBevelButtonMenuValueTag, sizeof(itemNo), &itemNo);
cntlID.id = kLineJoinPopup;
itemNo = (short)lineJoin + 1;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlData( control, kControlEntireControl, kControlBevelButtonMenuValueTag, sizeof(itemNo), &itemNo);
cntlID.id = kLineStylePopup;
itemNo = (short)lineStyle;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlData( control, kControlEntireControl, kControlBevelButtonMenuValueTag, sizeof(itemNo), &itemNo);
}
static void SyncAlphaSliders(float strokeAlpha, float fillAlpha)
{
ControlID cntlID = { kControlSignaturePalette, kStrokeAlphaSlider };
ControlRef control;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlValue(control, 100 * strokeAlpha);
cntlID.id = kFillAlphaSlider;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlValue(control, 100 * fillAlpha);
}
void CSkToolPaletteSyncPopups ( const CSkObject* obj )
{
if (obj != NULL)
{
float lineWidth;
CGLineCap lineCap;
CGLineJoin lineJoin;
int lineStyle;
GetLineAttributes(obj, &lineWidth, &lineCap, &lineJoin, &lineStyle);
InternalSyncPopups(lineWidth, lineCap, lineJoin, lineStyle);
SyncAlphaSliders(GetStrokeAlpha(obj), GetFillAlpha(obj));
}
}
//-----------------------------------------------------------------------------------------------------------------------
// We want our sliders for stroke alpha and fill alpha to provide immediate feedback
// in the drawing of the selected objects. Sending a corresponding HICommand
// to the frontmost document window from within the ActionProc does just that.
static void SliderControlActionProc( ControlRef control, ControlPartCode partCode )
{
#pragma unused(partCode)
ControlID cntlID;
HICommand cmd;
memset(&cmd, 0, sizeof(HICommand));
// fprintf(stderr, "SliderControlActionProc value = %d\n", (int)GetControlValue(control));
GetControlID(control, &cntlID);
if (cntlID.id == kStrokeAlphaSlider)
{
cmd.commandID = kCmdStrokeAlphaChanged;
}
else if (cntlID.id == kFillAlphaSlider)
{
cmd.commandID = kCmdFillAlphaChanged;
}
if (cmd.commandID != 0)
{
WindowRef window = FrontNonFloatingWindow();
// if NULL, we should have closed the ToolPalette, or at least disabled its controls!
if ( window != NULL)
{
SendWindowCommandEvent(window, &cmd);
}
}
}
//-----------------------------------------------------------------------------------------------------------------------
// Our ToolPaletteEventHandler needs to respond to all the HICommands sent by the various controls,
// deal specially with the "alpha" sliders, and hook into kEventWindowClose to deallocate the toolPStorage.
static pascal OSStatus ToolPaletteEventHandler( EventHandlerCallRef inCallRef, EventRef inEvent, void* inUserData )
{
#pragma unused ( inCallRef )
OSStatus err = eventNotHandledErr;
UInt32 eventKind = GetEventKind( inEvent );
UInt32 eventClass = GetEventClass( inEvent );
WindowRef toolPalette = (WindowRef)inUserData;
ToolPaletteStorage* toolPStorage = (ToolPaletteStorage*)GetWRefCon( toolPalette );
switch ( eventClass )
{
case kEventClassWindow:
if ( eventKind == kEventWindowClose ) // Dispose extra window storage here
{
DisposePtr( (Ptr) toolPStorage );
SetWRefCon(toolPalette, 0);
// fprintf(stderr, "ToolPalette: closed via kEventClassWindow/kEventWindowClose\n");
}
else if ( eventKind == kEventWindowClickContentRgn ) // only deal with "alpha" sliders, here
{
Point where;
ControlRef control;
ControlID cntlID;
ControlPartCode partCode;
GetEventParameter(inEvent, kEventParamMouseLocation, typeQDPoint, NULL, sizeof(Point), NULL, &where);
QDGlobalToLocalPoint(GetWindowPort(toolPalette), &where);
control = FindControlUnderMouse ( where, toolPalette, &partCode );
if (control != NULL)
{
GetControlID(control, &cntlID);
if ((cntlID.id == kStrokeAlphaSlider) || (cntlID.id == kFillAlphaSlider))
{
(void) HandleControlClick( control, where, 0, SliderControlActionProc );
}
}
}
break;
case kEventClassCommand:
if ( eventKind == kEventCommandProcess )
{
HICommandExtended command;
HICommand windowCmd;
memset(&windowCmd, 0, sizeof(HICommand));
GetEventParameter( inEvent, kEventParamDirectObject, typeHICommand, NULL, sizeof(HICommand), NULL, &command );
switch ( command.commandID )
{
// Line Width
case kCmdWidthNone:
toolPStorage->lineWidth = 0;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthOne:
toolPStorage->lineWidth = 1;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthTwo:
toolPStorage->lineWidth = 2;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthFour:
toolPStorage->lineWidth = 4;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthEight:
toolPStorage->lineWidth = 8;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthSixteen:
toolPStorage->lineWidth = 16;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthThinner:
if (toolPStorage->lineWidth > 0)
toolPStorage->lineWidth -= 1;
windowCmd.commandID = kCmdLineWidthChanged;
break;
case kCmdWidthThicker:
toolPStorage->lineWidth += 1;
windowCmd.commandID = kCmdLineWidthChanged;
break;
// Line Cap
case kCmdCapButt:
toolPStorage->lineCap = kCGLineCapButt;
windowCmd.commandID = kCmdLineCapChanged;
break;
case kCmdCapRound:
toolPStorage->lineCap = kCGLineCapRound;
windowCmd.commandID = kCmdLineCapChanged;
break;
case kCmdCapSquare:
toolPStorage->lineCap = kCGLineCapSquare;
windowCmd.commandID = kCmdLineCapChanged;
break;
// Line Join
case kCmdJoinMiter:
toolPStorage->lineJoin = kCGLineJoinMiter;
windowCmd.commandID = kCmdLineJoinChanged;
break;
case kCmdJoinRound:
toolPStorage->lineJoin = kCGLineJoinRound;
windowCmd.commandID = kCmdLineJoinChanged;
break;
case kCmdJoinBevel:
toolPStorage->lineJoin = kCGLineJoinBevel;
windowCmd.commandID = kCmdLineJoinChanged;
break;
// Line Style
case kCmdStyleSolid:
toolPStorage->lineStyle = kStyleSolid;
windowCmd.commandID = kCmdLineStyleChanged;
break;
case kCmdStyleDashed:
toolPStorage->lineStyle = kStyleDashed;
windowCmd.commandID = kCmdLineStyleChanged;
break;
// Color selection
case kCmdStrokeColor:
PickSomeColor(&toolPStorage->strokeColor);
windowCmd.commandID = kCmdStrokeColorChanged;
break;
case kCmdFillColor:
PickSomeColor(&toolPStorage->fillColor);
windowCmd.commandID = kCmdFillColorChanged;
break;
default:
{
// char* c = (char*)&command.commandID;
// fprintf(stderr, "ToolPaletteCommand kEventCommandProcess ' %c%c%c%c'\n", c[0], c[1], c[2], c[3]);
}
}
if (windowCmd.commandID != 0)
{
WindowRef window = FrontNonFloatingWindow();
// if NULL, we should have closed the ToolPalette, or at least disabled its controls!
if ( window != NULL)
{
SendWindowCommandEvent(window, &windowCmd);
}
}
}
else if (eventKind == kHICommandClose)
{
DisposePtr((Ptr)toolPStorage);
SetWRefCon(toolPalette, 0);
// fprintf(stderr, "ToolPalette: closed via kEventClassCommand/kHICommandClose\n");
}
break;
}
return err;
}
//-----------------------------------------------------------------------------------------------------------------------
// This ControlEventHandler is installed on the buttons to select the current "Tool"
static pascal OSStatus ControlEventHandler( EventHandlerCallRef inCallRef, EventRef inEvent, void* inUserData )
{
// UInt32 eventClass = GetEventClass(inEvent);
UInt32 eventKind = GetEventKind(inEvent);
OSStatus err = eventNotHandledErr;
if ( eventKind == kEventControlHit)
{
ControlRef control = (ControlRef)inUserData;
WindowRef wRef = GetControlOwner(control);
ToolPaletteStorage* toolPStorage = (ToolPaletteStorage*)GetWRefCon(wRef);
ControlID cntlID;
int i;
GetControlID(control, &cntlID);
if ((cntlID.id >= kArrowTool) && (cntlID.id <= kRRectTool))
{
toolPStorage->selectedTool = cntlID.id;
// Deselect old tool, select new tool
for (i = kArrowTool; i <= kRRectTool; ++i)
{
int cntlValue = (i == toolPStorage->selectedTool ? 1 : 0);
cntlID.id = i; // cntlID.signature = 'Tool', from above
err = GetControlByID( wRef, &cntlID, &control );
require_noerr( err, CantGetControlByID );
SetControl32BitValue(control, cntlValue);
}
}
}
CantGetControlByID:
err = CallNextEventHandler( inCallRef, inEvent );
return err;
}
//------------------------------------------------------------------------
WindowRef CSkToolPalette( IBNibRef theNibRef )
{
static EventHandlerUPP gToolPaletteEventProc = NULL;
static EventHandlerUPP gControlEventProc = NULL;
if (sToolPaletteWindow == NULL)
{
const EventTypeSpec toolPaletteEvents[] = { { kEventClassCommand, kEventCommandProcess },
{ kEventClassWindow, kEventWindowClickContentRgn },
{ kEventClassWindow, kEventWindowClose }
};
const EventTypeSpec controlEventList[] = { { kEventClassControl, kEventControlHit }
};
ToolPaletteStorage* tPS;
OSStatus err;
err = CreateWindowFromNib( theNibRef, CFSTR("ToolPalette"), &sToolPaletteWindow );
if (err == noErr)
{
if (gToolPaletteEventProc == NULL)
{
gToolPaletteEventProc = NewEventHandlerUPP(ToolPaletteEventHandler);
if (gToolPaletteEventProc == NULL)
return NULL; // Why do we bother?
}
tPS = CreateToolPaletteStorage();
SetWRefCon( sToolPaletteWindow, (long)tPS );
err = InstallWindowEventHandler ( sToolPaletteWindow,
gToolPaletteEventProc,
GetEventTypeCount(toolPaletteEvents),
toolPaletteEvents,
sToolPaletteWindow,
NULL );
require_noerr( err, CantInstallWindowEventHandler );
// Install our ControlEventHandler on Tool buttons
{
ControlID cntlID = { kControlSignaturePalette, tPS->selectedTool };
ControlRef control;
int i;
if (gControlEventProc == NULL)
{
gControlEventProc = NewEventHandlerUPP(ControlEventHandler);
if (gControlEventProc == NULL)
return NULL; // Why do we bother?
}
err = GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlValue(control, 1);
for (i = kArrowTool; i <= kRRectTool /* kFillColorBtn */; ++i)
{
cntlID.id = i;
err = GetControlByID( sToolPaletteWindow, &cntlID, &control );
require_noerr( err, CantGetControlByID );
err = InstallControlEventHandler( control,
gControlEventProc,
GetEventTypeCount( controlEventList ),
controlEventList,
control,
NULL );
require_noerr( err, CantInstallControlEventHandler );
}
// Set up the bevel button min/max values according to their menu items
cntlID.id = kLineWidthPopup;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlMinimum(control, 0);
SetControlMaximum(control, kLastLineWidthItem);
cntlID.id = kLineCapPopup;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlMinimum(control, 0);
SetControlMaximum(control, 3);
cntlID.id = kLineJoinPopup;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlMinimum(control, 0);
SetControlMaximum(control, 3);
cntlID.id = kLineStylePopup;
GetControlByID( sToolPaletteWindow, &cntlID, &control );
SetControlMinimum(control, 0);
SetControlMaximum(control, 2);
InternalSyncPopups(tPS->lineWidth, tPS->lineCap, tPS->lineJoin, tPS->lineStyle);
}
CantInstallWindowEventHandler:
CantGetControlByID:
CantInstallControlEventHandler:
ShowWindow( sToolPaletteWindow );
}
}
return sToolPaletteWindow;
}
</pre>
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