WebSVN – filter_foundry – Blame – /trunk/preview.c

Rev	Author	Line No.	Line
2	toby	1	/*
18	toby	2	This file is part of Filter Foundry, a filter plugin for Adobe Photoshop
2	toby	3	Copyright (C) 2003-5 Toby Thain, toby@telegraphics.com.au
		4
		5	This program is free software; you can redistribute it and/or modify
		6	it under the terms of the GNU General Public License as published by
		7	the Free Software Foundation; either version 2 of the License, or
		8	(at your option) any later version.
		9
		10	This program is distributed in the hope that it will be useful,
		11	but WITHOUT ANY WARRANTY; without even the implied warranty of
		12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		13	GNU General Public License for more details.
		14
		15	You should have received a copy of the GNU General Public License
		16	along with this program; if not, write to the Free Software
		17	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		18	*/
		19
		20	/* This is PLATFORM INDEPENDENT user interface code - mainly dialog logic */
		21
		22	#include "ff.h"
		23
29	toby	24	#include "PIProperties.h"
2	toby	25
		26	#include "node.h"
		27	#include "funcs.h"
		28	#include "y.tab.h"
		29	#include "choosefile.h"
		30
		31	PSPixelMap preview_pmap;
		32	PSPixelMask preview_pmask;
		33	Handle preview_handle;
		34	UIRECT preview_rect;
37	toby	35	int preview_w,preview_h,previewerr = false;
2	toby	36	Point preview_scroll;
		37	Boolean preview_complete = false;
		38
		39	Boolean setup_preview(FilterRecordPtr pb){
		40
		41	//dbg("setup_preview");
		42
		43	if(pb->displayPixels && pb->advanceState){
		44
		45	preview_w = MIN(preview_rect.right - preview_rect.left - 2,pb->filterRect.right - pb->filterRect.left);
		46	preview_h = MIN(preview_rect.bottom - preview_rect.top - 2,pb->filterRect.bottom - pb->filterRect.top);
		47
		48	preview_pmap.version = 1;
		49	preview_pmap.bounds.left = preview_pmap.bounds.top = 0;
		50	preview_pmap.bounds.right = preview_w;
		51	preview_pmap.bounds.bottom = preview_h;
		52	preview_pmap.imageMode = nplanes>1 ? plugInModeRGBColor : plugInModeGrayScale;
		53	preview_pmap.rowBytes = nplanes*preview_w;
		54	preview_pmap.colBytes = nplanes;
		55	preview_pmap.planeBytes = 1; /interleaved/
		56	// preview_pmap.baseAddr = preview_data;
		57	/* baseAddr must be set before using pixelmap */
		58
		59	//---------------------------------------------------------------------------
		60	// Fields new in version 1:
		61	//---------------------------------------------------------------------------
		62	preview_pmap.mat = NULL;
		63
		64	if(nplanes==4){
		65	preview_pmask.next = NULL;
		66	// preview_pmask.maskData = preview_data+3;
		67	preview_pmask.rowBytes = preview_pmap.rowBytes;
		68	preview_pmask.colBytes = nplanes;
		69	preview_pmask.maskDescription = kSimplePSMask;
		70	preview_pmap.masks = &preview_pmask;
		71	}else
		72	preview_pmap.masks = NULL;
		73
		74	preview_handle = PINEWHANDLE((long)preview_h * preview_pmap.rowBytes);
		75	}else
		76	preview_handle = NULL;
		77	return preview_handle != NULL;
		78
		79	//---------------------------------------------------------------------------
		80	// Fields new in version 2:
		81	//---------------------------------------------------------------------------
		82	// preview_pmap.pixelOverlays;
		83	// preview_pmap.colorManagementOptions;
		84
		85	// setup(pb); // prepare for evaluations
		86	}
		87
		88	void dispose_preview(){
		89	if(preview_handle){
		90	PIDISPOSEHANDLE(preview_handle);
		91	preview_handle = NULL;
		92	}
		93	}
		94
		95	void recalc_preview(FilterRecordPtr pb,DIALOGREF dp){
		96	extern int srcradused,needinput;
		97	extern double zoomfactor;
		98	OSErr e;
45	toby	99	int j,n,scaledw,scaledh,imgw,imgh;
2	toby	100	Rect r,outRect;
		101	Ptr outrow;
		102
37	toby	103	preview_complete = false;
		104
2	toby	105	if(preview_handle){
		106	/* size of previewed area, of source image; but no larger than filtered area (selection) */
		107	scaledw = zoomfactor*preview_w;
		108	if(scaledw > (pb->filterRect.right - pb->filterRect.left))
		109	scaledw = (pb->filterRect.right - pb->filterRect.left);
		110	scaledh = zoomfactor*preview_h;
		111	if(scaledh > (pb->filterRect.bottom - pb->filterRect.top))
		112	scaledh = (pb->filterRect.bottom - pb->filterRect.top);
		113
		114	/* scale clipped preview area down again - this becomes the pixel size of preview */
		115	imgw = scaledw/zoomfactor;
		116	if(imgw > preview_w)
		117	imgw = preview_w;
		118	imgh = scaledh/zoomfactor;
		119	if(imgh > preview_h)
		120	imgh = preview_h;
		121
		122	// Use to set the phase of the checkerboard:
		123	preview_pmap.maskPhaseRow = preview_scroll.v/zoomfactor;
		124	preview_pmap.maskPhaseCol = preview_scroll.h/zoomfactor;
		125
		126	/* compute source data rectangle (inRect) */
		127
		128	/* centre preview on filtered part of input image, adding scroll offset */
53	toby	129	r.left = (pb->filterRect.left + pb->filterRect.right - scaledw)/2 + preview_scroll.h;
2	toby	130	/* make sure it does not go outside the input area */
		131	if(r.left < pb->filterRect.left)
		132	r.left = pb->filterRect.left;
		133	else if(r.left > pb->filterRect.right-scaledw)
53	toby	134	r.left = pb->filterRect.right - scaledw;
2	toby	135	r.right = r.left + scaledw;
		136
		137	/* now compute for vertical */
53	toby	138	r.top = (pb->filterRect.top+pb->filterRect.bottom - scaledh)/2 + preview_scroll.v;
2	toby	139	if(r.top < pb->filterRect.top)
		140	r.top = pb->filterRect.top;
		141	else if(r.top > pb->filterRect.bottom-scaledh)
53	toby	142	r.top = pb->filterRect.bottom - scaledh;
2	toby	143	r.bottom = r.top + scaledh;
		144
		145	/* if formulae need random access to image - src(), rad() - we must request entire area: */
		146	if(srcradused){
		147	SETRECT(pb->inRect,0,0,pb->imageSize.h,pb->imageSize.v);
		148	}else
		149	pb->inRect = r;
		150
		151	pb->outRect = pb->inRect;
		152	SETRECT(pb->maskRect,0,0,0,0);
		153	pb->inLoPlane = pb->outLoPlane = 0;
		154	pb->inHiPlane = pb->outHiPlane = nplanes-1;
		155
		156	//dbg("recalc_preview: about to call advanceState()");
37	toby	157
2	toby	158	if( !needinput \|\| !(e = pb->advanceState()) ){
		159	Ptr outptr = PILOCKHANDLE(preview_handle,false);
53	toby	160	int blankrows = (preview_h - imgh)/2,
		161	blankcols = (preview_w - imgw)/2, pmrb = preview_pmap.rowBytes;
2	toby	162
		163	INITRANDSEED();
		164	//dbg("recalc_preview: about to call process()");
		165
		166	SETRECT(outRect,0,0,imgw,imgh);
		167
53	toby	168	e = process_scaled(pb, false, &r, &outRect,
		169	outptr + pmrbblankrows + nplanesblankcols, pmrb, zoomfactor);
2	toby	170	if(blankrows){
53	toby	171	memset(outptr, 0xff, pmrb*blankrows);
2	toby	172	n = preview_h - blankrows - imgh; /* blank rows below preview */
53	toby	173	memset(outptr + pmrb(blankrows+imgh), 0xff, pmrbn);
2	toby	174	}
		175	if(blankcols){
		176	n = preview_w - blankcols - imgw; /* blank columns on right side of preview */
53	toby	177	outrow = outptr + pmrb*blankrows;
2	toby	178	for( j = blankrows ; j < preview_h - blankrows ; ++j ){
53	toby	179	memset(outrow, 0xff, nplanes*blankcols);
		180	memset(outrow + nplanes(blankcols+imgw), 0xff, nplanesn);
		181	outrow += pmrb;
2	toby	182	}
		183	}
		184
		185	if(!e){
		186	preview_complete = true;
		187
		188	#ifdef WIN_ENV
		189	{
		190	extern HWND preview_hwnd;
		191	HDC hdc = GetDC(preview_hwnd);
		192
		193	//dbg("recalc_preview: about to call drawpreview()");
		194	drawpreview(dp,hdc,outptr);
		195
		196	ReleaseDC(preview_hwnd,hdc);
		197	}
		198	#else
		199	{
		200	GrafPtr saveport;
		201
		202	GetPort(&saveport);
		203	SetPortDialogPort(dp);
		204
		205	drawpreview(dp,NULL,outptr);
		206
		207	SetPort(saveport);
		208	}
		209	#endif
		210	}
		211
		212	PIUNLOCKHANDLE(preview_handle);
		213
37	toby	214	}/*else{
		215	char s[0x100];
2	toby	216	sprintf(s,"recalc_preview: advanceState failed (%d)\n\
		217	inRect=(%d,%d,%d,%d) filterRect=(%d,%d,%d,%d) inLoPlane=%d inHiPlane=%d ",
		218	e,
		219	pb->inRect.left,pb->inRect.top,pb->inRect.right,pb->inRect.bottom,
		220	pb->filterRect.left,pb->filterRect.top,pb->filterRect.right,pb->filterRect.bottom,
		221	pb->inLoPlane,pb->inHiPlane);
		222	dbg(s);
37	toby	223	}*/
		224
		225	if(e && !previewerr){
39	toby	226	alertuser("Could not build preview at chosen zoom level.",
37	toby	227	e == memFullErr && !srcradused ? "The image is too large for available memory. Try zooming in.\nIf that does not help, Cancel and retry the filter." : "");
		228	previewerr = true;
2	toby	229	}
37	toby	230
2	toby	231	}
		232	}
		233
		234	OSErr drawpreview(DIALOGREF dp,void *hdc,Ptr imageptr){
		235	int32 watchsusp;
		236	OSErr e = noErr;
		237	VRect srcRect;
		238	UIRECT imagebounds;
		239
		240	if(preview_handle && preview_complete){
		241
		242	srcRect = preview_pmap.bounds;
		243
53	toby	244	imagebounds.left = (preview_rect.left + preview_rect.right - preview_w)/2;
		245	imagebounds.top = (preview_rect.top + preview_rect.bottom - preview_h)/2;
2	toby	246	imagebounds.right = imagebounds.left + preview_w;
		247	imagebounds.bottom = imagebounds.top + preview_h;
		248
		249	preview_pmap.baseAddr = imageptr;//PILOCKHANDLE(preview_handle,false);
		250	preview_pmask.maskData = imageptr+3;
		251
		252	if(gpb->propertyProcs->getPropertyProc){
		253	gpb->propertyProcs->getPropertyProc(kPhotoshopSignature,propWatchSuspension,0,&watchsusp,NULL);
		254	gpb->propertyProcs->setPropertyProc(kPhotoshopSignature,propWatchSuspension,0,watchsusp+1,NULL);
		255	}
		256	e = gpb->displayPixels(&preview_pmap,&srcRect,imagebounds.top,imagebounds.left,hdc);
		257
		258	if(gpb->propertyProcs->getPropertyProc)
		259	gpb->propertyProcs->setPropertyProc(kPhotoshopSignature,propWatchSuspension,0,watchsusp,NULL);
		260	}
		261	return e;
		262	}

Subversion Repositories filter_foundry

filter_foundry/trunk/preview.c – Rev 53