зеркало из https://github.com/mozilla/pjs.git
Generic Image rendering functions moved to this new file. Initial checkin.
This commit is contained in:
radha%netscape.com
Родитель
6600ae2d92
Коммит
58069e27b2
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@ -0,0 +1,537 @@
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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/* Image.cpp: Class for managing all imaging rendering issues
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* Created: Radha Kulkarni <radha@netscape.com> 21-Aug-1998
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*/
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#include "il_util.h"
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#include "View.h"
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#include "Frame.h"
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#include "Image.h"
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#ifdef DEBUG_radha
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#define D(x) x
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#else
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#define D(x)
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#endif
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XFE_Image::XFE_Image(XFE_Component * frame, char * imageURL, fe_colormap * cmap, Widget baseWidget)
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{
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// Initializations
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m_urlString = strdup(imageURL);
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completelyLoaded = False;
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badImage = False;
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m_imageContext = NULL;
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fec = NULL;
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cxtInitSucceeded = False;
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m_image = NULL;
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m_mask = NULL;
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m_frame = frame;
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m_badImage = 0;
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// Create new context
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m_imageContext = XP_NewContext();
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fec = XP_NEW_ZAP(fe_ContextData);
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if (m_imageContext && fec)
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{
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m_imageContext->type = MWContextIcon;
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CONTEXT_DATA(m_imageContext) = fec;
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// Set up the image library callbacks
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CONTEXT_DATA(m_imageContext)->DisplayPixmap = (DisplayPixmapPtr)fe_DisplayPixmap;
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CONTEXT_DATA(m_imageContext)->NewPixmap = (NewPixmapPtr)fe_NewPixmap;
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CONTEXT_DATA(m_imageContext)->ImageComplete = (ImageCompletePtr)fe_ImageComplete;
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/*
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* Stolen from Frame.cpp.
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*/
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CONTEXT_DATA (m_imageContext)->colormap = cmap;
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CONTEXT_WIDGET (m_imageContext) = baseWidget;
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CONTEXT_DATA(m_imageContext)->drawing_area = baseWidget;
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m_imageContext->funcs = fe_BuildDisplayFunctionTable();
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m_imageContext->convertPixX = m_imageContext->convertPixY = 1;
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m_imageContext->is_grid_cell = FALSE;
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m_imageContext->grid_parent = NULL;
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XP_AddContextToList(m_imageContext);
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fe_InitIconColors(m_imageContext);
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// Use colors from prefs
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LO_Color *color;
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color = &fe_globalPrefs.links_color;
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CONTEXT_DATA(m_imageContext)->link_pixel = fe_GetPixel(m_imageContext,
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color->red,
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color->green,
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color->blue);
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color = &fe_globalPrefs.vlinks_color;
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CONTEXT_DATA(m_imageContext)->vlink_pixel = fe_GetPixel(m_imageContext,
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color->red,
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color->green,
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color->blue);
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color = &fe_globalPrefs.text_color;
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CONTEXT_DATA(m_imageContext)->default_fg_pixel =fe_GetPixel(m_imageContext,
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color->red,
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color->green,
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color->blue);
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color = &fe_globalPrefs.background_color;
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CONTEXT_DATA(m_imageContext)->default_bg_pixel =fe_GetPixel(m_imageContext,
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color->red,
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color->green,
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color->blue);
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SHIST_InitSession (m_imageContext);
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fe_load_default_font(m_imageContext);
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{
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Pixel unused_select_pixel;
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XmGetColors (XtScreen (baseWidget),
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fe_cmap(m_imageContext),
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CONTEXT_DATA (m_imageContext)->default_bg_pixel,
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&(CONTEXT_DATA (m_imageContext)->fg_pixel),
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&(CONTEXT_DATA (m_imageContext)->top_shadow_pixel),
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&(CONTEXT_DATA (m_imageContext)->bottom_shadow_pixel),
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&unused_select_pixel);
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}
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/* Add mapping between MWContext and frame */
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ViewGlue_addMapping((XFE_Frame *)m_frame, m_imageContext);
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/* Initialize the Imagelib callbacks, Imagecontexts,
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* imageobserver and group contexts
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*/
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if (!fe_init_image_callbacks(m_imageContext))
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{
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cxtInitSucceeded = False;
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return;
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}
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fe_InitColormap (m_imageContext);
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cxtInitSucceeded = True;
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}
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else
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{
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cxtInitSucceeded = False;
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return;
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}
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}
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XFE_Image::~XFE_Image(void)
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{
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free(m_urlString);
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// S'd I destroy the m_mask and m_image and the clientdata inside them?
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// Destroy the Image groupcontexts and observers
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if (m_imageContext)
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{
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PRBool observer_removed_p;
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if (m_imageContext->color_space)
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{
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D(printf("Deleting image color spaces\n");)
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IL_ReleaseColorSpace(m_imageContext->color_space);
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m_imageContext->color_space = NULL;
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}
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/* Destroy the image group context after removing the image group
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* observer
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*/
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if (m_imageContext->img_cx) {
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D(printf("Deleting the image group observer and context\n");)
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observer_removed_p =
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IL_RemoveGroupObserver(m_imageContext->img_cx,
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fe_ImageGroupObserver,
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(void *)m_imageContext);
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IL_DestroyGroupContext(m_imageContext->img_cx);
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m_imageContext->img_cx = NULL;
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}
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} /* m_imageContext */
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free (CONTEXT_DATA (m_imageContext));
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free (m_imageContext);
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}
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/* returns if the image has been completely loaded */
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Boolean
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XFE_Image::isImageLoaded(void)
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{
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return (completelyLoaded);
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}
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/* return the image pixmap */
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Pixmap
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XFE_Image::getPixmap(void)
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{
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if (m_image)
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return (Pixmap)(((fe_PixmapClientData *)(m_image->client_data))->pixmap);
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return (Pixmap)NULL;
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}
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/* Return the image mask */
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Pixmap
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XFE_Image::getMask(void)
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{
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if (m_mask)
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return (Pixmap)(((fe_PixmapClientData *)(m_mask->client_data))->pixmap);
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return (Pixmap)NULL;
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}
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/* Get image width */
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PRInt32
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XFE_Image::getImageWidth(void)
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{
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return(imageWidth);
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}
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/* Get image height */
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PRInt32
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XFE_Image::getImageHeight(void)
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{
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return(imageHeight);
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}
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/* Call NET_GetURL() to fetch the image */
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void
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XFE_Image::loadImage(void)
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{
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if (cxtInitSucceeded)
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NET_GetURL(NET_CreateURLStruct(m_urlString, NET_DONT_RELOAD), FO_CACHE_AND_PRESENT, m_imageContext, Image_GetUrlExitRoutine);
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}
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extern "C"
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{
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void
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Image_GetUrlExitRoutine(URL_Struct *pUrl, int iStatus, MWContext *pContext)
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{
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// Report any errors.
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if(iStatus < 0 && pUrl->error_msg != NULL)
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{
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printf("Couldn't load image. Need to put the bad image up\n");
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}
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XP_FREE(pUrl);
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}
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};
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///////////////////////////////////////////////////////////////////////////
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// ImageLibrary Callbacks //
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///////////////////////////////////////////////////////////////////////////
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extern "C"
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{
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/* The XFE handle to the image library callback -IMGCB_DisplayPixmap */
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void
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fe_DisplayPixmap(MWContext * context, IL_Pixmap * image, IL_Pixmap * mask, PRInt32 x, PRInt32 y, PRInt32 x_offset, PRInt32 y_offset, PRInt32 width, PRInt32 height)
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{
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XFE_Frame * frameHandle=(XFE_Frame *)NULL;
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/* Get the handle to the frame from the context */
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if (context)
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frameHandle = (XFE_Frame *)ViewGlue_getFrame(context);
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/* Check the context type. If it is anything other than MWContextIcon
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* let it do the regular image processing. If it is MWContextIcon,
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* Look for a NavCenterVIew in th frame and let the view handle the
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* pixmap display
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*/
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if (context->type != MWContextIcon)
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{
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/* Call the frame's displayImage method */
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fe_DisplayImage(context, image, mask, x, y, x_offset, y_offset,
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width, height);
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}
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else
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{
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/* If the context type is MWContextIcon, get a handle to
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* NavCenterView and let it handle pixmap
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*/
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XFE_View * navCenterView = XFE_View::getNavCenterView(frameHandle->getView());
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if (navCenterView)
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{
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Widget buttonWidget = CONTEXT_WIDGET(context);
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navCenterView->handleDisplayPixmap(buttonWidget, image, mask, width, height);
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}
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}
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} /* DisplayPixmap */
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/* The XFE handle to the image library callback _IMGCB_NewPixmap */
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void
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fe_NewPixmap(MWContext * context, IL_Pixmap * image, Boolean mask)
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{
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XFE_Frame * frameHandle=(XFE_Frame *)NULL;
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/* Get the handle to the frame from the context */
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if (context)
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frameHandle = ViewGlue_getFrame(context);
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/* Check the context type. If it is anything other than MWContextIcon
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* simply return, 'coz the frames don't have any processing for the
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* the NewPixmap callback. If it is MWContextIcon,
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* Look for a NavCenterView in th frame and let the view handle it.
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*/
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if (frameHandle)
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{
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if (context->type == MWContextIcon)
|
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{
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/* If the context type is MWContextIcon, get a handle to
|
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* NavCenterView and let it handle pixmap
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*/
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XFE_View * navCenterView = XFE_View::getNavCenterView(frameHandle->getView());
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if (navCenterView)
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{
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Widget buttonWidget = CONTEXT_WIDGET(context);
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navCenterView->handleNewPixmap(buttonWidget, image, mask);
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}
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|
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|
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}
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}
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} /* NewPixmap */
|
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/* The XFE handle to the image library callback _IMGCB_ImageComplete */
|
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void
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fe_ImageComplete(MWContext * context, IL_Pixmap * image)
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{
|
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XFE_Frame * frameHandle=(XFE_Frame *)NULL;
|
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/* Get the handle to the frame from the context */
|
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|
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if (context)
|
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frameHandle = (XFE_Frame *)ViewGlue_getFrame(context);
|
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|
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/* Check the context type. If it is anything other than MWContextIcon
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* simply return, 'coz the frames don't have any processing for the
|
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* the NewPixmap callback. If it is MWContextIcon,
|
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* Look for a NavCenterView in th frame and let the view handle it.
|
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*/
|
||||
|
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if (frameHandle)
|
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{
|
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if (context->type == MWContextIcon)
|
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{
|
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/* If the context type is MWContextIcon, let the NavCenterView
|
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* handle it
|
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*/
|
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XFE_View * navCenterView = XFE_View::getNavCenterView(frameHandle->getView());
|
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if (navCenterView)
|
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{
|
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Widget buttonWidget = CONTEXT_WIDGET(context);
|
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navCenterView->handleImageComplete(buttonWidget, image);
|
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}
|
||||
}
|
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}
|
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|
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} /* ImageComplete */
|
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|
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|
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/* The actual XFE function that renders image on a HTML area */
|
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void
|
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fe_DisplayImage(MWContext * context, IL_Pixmap * image,
|
||||
IL_Pixmap * mask, PRInt32 x, PRInt32 y,
|
||||
PRInt32 x_offset, PRInt32 y_offset, PRInt32 width,PRInt32 height)
|
||||
{
|
||||
|
||||
int32 img_x_offset, img_y_offset; /* Offset of image in drawable. */
|
||||
int32 rect_x_offset, rect_y_offset; /* Offset of update rect in
|
||||
drawable. */
|
||||
NI_PixmapHeader *img_header = &image->header;
|
||||
uint32 img_width = img_header->width; /* Image width. */
|
||||
uint32 img_height = img_header->height; /* Image height. */
|
||||
|
||||
Widget widget = CONTEXT_WIDGET(context);
|
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fe_Drawable *fe_drawable = CONTEXT_DATA(context)->drawable;
|
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Drawable drawable = fe_drawable->xdrawable;
|
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Display *dpy = XtDisplay(widget);
|
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Pixmap img_x_pixmap, mask_x_pixmap;
|
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fe_PixmapClientData *img_client_data, *mask_client_data;
|
||||
GC gc;
|
||||
XGCValues gcv;
|
||||
unsigned long flags;
|
||||
XP_Bool tiling_required = FALSE;
|
||||
|
||||
/* Check for zero display area. */
|
||||
if (width == 0 || height == 0)
|
||||
return;
|
||||
|
||||
/* Retrieve the server pixmaps. */
|
||||
img_client_data = (fe_PixmapClientData *)image->client_data;
|
||||
if (!img_client_data)
|
||||
return;
|
||||
img_x_pixmap = img_client_data->pixmap;
|
||||
if (!img_x_pixmap)
|
||||
return;
|
||||
if (mask) {
|
||||
mask_client_data = (fe_PixmapClientData *)mask->client_data;
|
||||
mask_x_pixmap = mask_client_data->pixmap;
|
||||
}
|
||||
|
||||
/* Determine whether tiling is required. */
|
||||
if ((x_offset + width > img_width) || (y_offset + height > img_height))
|
||||
tiling_required = TRUE;
|
||||
|
||||
/* Compute the offset into the drawable of the image origin. */
|
||||
img_x_offset = x - CONTEXT_DATA(context)->document_x +
|
||||
fe_drawable->x_origin;
|
||||
img_y_offset = y - CONTEXT_DATA(context)->document_y +
|
||||
fe_drawable->y_origin;
|
||||
|
||||
/* Compute the offset into the drawable for the area to be drawn. */
|
||||
rect_x_offset = img_x_offset + x_offset;
|
||||
rect_y_offset = img_y_offset + y_offset;
|
||||
|
||||
/* Do the actual drawing. There are several cases to be dealt with:
|
||||
transparent vs non-transparent, tiled vs non-tiled and clipped by
|
||||
compositor's clip region vs not clipped. */
|
||||
memset(&gcv, ~0, sizeof (XGCValues));
|
||||
if (mask) { /* Image is transparent. */
|
||||
if (tiling_required) {
|
||||
/* Offsets are measured wrt the origin of the tiled mask to
|
||||
be generated. */
|
||||
int x_tile_offset = img_x_offset - rect_x_offset;
|
||||
int y_tile_offset = img_y_offset - rect_y_offset;
|
||||
Pixmap tmp_pixmap = 0;
|
||||
|
||||
/* Create the mask by tiling the mask_x_pixmap and computing
|
||||
the intersection with the compositor's clip region. */
|
||||
tmp_pixmap =
|
||||
fe_TiledMaskWithClipRegion(dpy, drawable, mask_x_pixmap,
|
||||
width, height, x_tile_offset,
|
||||
y_tile_offset, -rect_x_offset,
|
||||
-rect_y_offset,
|
||||
(Region)fe_drawable->clip_region);
|
||||
|
||||
/* Create the GC. Don't attempt to get a GC from the GC cache
|
||||
because we are using a temporary mask pixmap. */
|
||||
gcv.fill_style = FillTiled;
|
||||
gcv.tile = img_x_pixmap;
|
||||
gcv.ts_x_origin = img_x_offset;
|
||||
gcv.ts_y_origin = img_y_offset;
|
||||
gcv.clip_mask = tmp_pixmap;
|
||||
gcv.clip_x_origin = rect_x_offset;
|
||||
gcv.clip_y_origin = rect_y_offset;
|
||||
flags = GCFillStyle | GCTile | GCTileStipXOrigin |
|
||||
GCTileStipYOrigin | GCClipMask | GCClipXOrigin | GCClipYOrigin;
|
||||
gc = XCreateGC(dpy, drawable, flags, &gcv);
|
||||
|
||||
/* Draw the image (transparent and tiled.) */
|
||||
XFillRectangle (dpy, drawable, gc, rect_x_offset, rect_y_offset,
|
||||
width, height);
|
||||
|
||||
/* Clean up. */
|
||||
XFreeGC(dpy, gc);
|
||||
XFreePixmap(dpy, tmp_pixmap);
|
||||
}
|
||||
else { /* Tiling not required. */
|
||||
if (fe_drawable->clip_region) {
|
||||
|
||||
/* Draw the image (transparent, non-tiled and with
|
||||
clip_region.) x_offset and y_offset are wrt the image
|
||||
origin, while rect_x_offset and rect_y_offset are wrt the
|
||||
drawable origin. */
|
||||
fe_DrawMaskedImageWithClipRegion(dpy, drawable, img_x_pixmap,
|
||||
mask_x_pixmap, width, height,
|
||||
img_x_offset, img_y_offset,
|
||||
x_offset, y_offset,
|
||||
(Region)fe_drawable->clip_region);
|
||||
}
|
||||
else { /* No clip region. */
|
||||
/* XXX transparent, non-tiled and no clip_region. */
|
||||
}
|
||||
}
|
||||
}
|
||||
else { /* Image is not transparent. */
|
||||
if (tiling_required) {
|
||||
/* Get the GC from the GC cache. If the compositor has given us
|
||||
a clip region, then the GC must have a matching clip mask. */
|
||||
gcv.fill_style = FillTiled;
|
||||
gcv.tile = img_x_pixmap;
|
||||
gcv.ts_x_origin = img_x_offset;
|
||||
gcv.ts_y_origin = img_y_offset;
|
||||
flags = GCFillStyle | GCTile | GCTileStipXOrigin |
|
||||
GCTileStipYOrigin;
|
||||
if (fe_drawable->clip_region)
|
||||
gc = fe_GetGCfromDW(dpy, drawable, flags, &gcv,
|
||||
(Region)fe_drawable->clip_region);
|
||||
else
|
||||
gc = fe_GetGCfromDW(dpy, drawable, flags, &gcv, NULL);
|
||||
|
||||
/* Draw the image (opaque and tiled.) */
|
||||
XFillRectangle (dpy, drawable, gc, rect_x_offset, rect_y_offset,
|
||||
width, height);
|
||||
}
|
||||
else { /* Tiling not required. */
|
||||
/* Get the GC from the GC cache. If the compositor has given us
|
||||
a clip region, then the GC must have a matching clip mask. */
|
||||
gcv.function = GXcopy;
|
||||
if (fe_drawable->clip_region)
|
||||
gc = fe_GetGCfromDW(dpy, drawable, GCFunction,
|
||||
&gcv, (Region)fe_drawable->clip_region);
|
||||
else
|
||||
gc = fe_GetGCfromDW(dpy, drawable, GCFunction, &gcv, NULL);
|
||||
|
||||
/* Draw the image (opaque and non-tiled.) */
|
||||
XCopyArea (dpy, img_x_pixmap, drawable, gc, x_offset,
|
||||
y_offset, width, height, rect_x_offset, rect_y_offset);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
} /* displayImage */
|
||||
}; /* extern "C" */
|
||||
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "License"); you may not use this file except in
|
||||
* compliance with the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS"
|
||||
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
||||
* the License for the specific language governing rights and limitations
|
||||
* under the License.
|
||||
*
|
||||
* The Original Code is Mozilla Communicator client code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape Communications
|
||||
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
||||
* Netscape Communications Corporation. All Rights Reserved.
|
||||
*/
|
||||
|
||||
/* Image.h: Top level Class to manage all image rendering issues
|
||||
* Created: Radha Kulkarni <radha@netscape.com> 21-Aug-1998
|
||||
*/
|
||||
|
||||
#ifndef _xfe_image_h
|
||||
#define _xfe_image_h
|
||||
|
||||
#include "libimg.h"
|
||||
#include "ViewGlue.h"
|
||||
#include "xfe.h"
|
||||
|
||||
extern "C"
|
||||
{
|
||||
void fe_DisplayImage(MWContext * context, IL_Pixmap * image,
|
||||
IL_Pixmap * mask,PRInt32 x,PRInt32 y,
|
||||
PRInt32 x_offset, PRInt32 y_offset,
|
||||
PRInt32 width, PRInt32 height);
|
||||
|
||||
void
|
||||
Image_GetUrlExitRoutine(URL_Struct *pUrl, int iStatus, MWContext *pContext);
|
||||
|
||||
};
|
||||
|
||||
class XFE_Image{
|
||||
|
||||
public:
|
||||
|
||||
XFE_Image(XFE_Component * frame, char * imageUrl, fe_colormap *, Widget);
|
||||
~XFE_Image();
|
||||
virtual Pixmap getPixmap();
|
||||
virtual Pixmap getMask();
|
||||
virtual PRInt32 getImageWidth();
|
||||
virtual PRInt32 getImageHeight();
|
||||
virtual Boolean isImageLoaded();
|
||||
virtual void loadImage();
|
||||
|
||||
|
||||
protected:
|
||||
|
||||
MWContext * m_imageContext; // Special MWContext
|
||||
fe_ContextData * fec; // FE specific data for MWContext
|
||||
char * m_urlString; // Url string
|
||||
IL_Pixmap * m_image; // The image
|
||||
IL_Pixmap * m_mask; // The mask
|
||||
Pixmap m_badImage; // Bad image to use if the image loading fails
|
||||
PRInt32 imageWidth;
|
||||
PRInt32 imageHeight;
|
||||
XFE_Component * m_frame;
|
||||
|
||||
Boolean badImage; // Indicates whether to use the bad bitmap
|
||||
Boolean cxtInitSucceeded; // Indicates if MWcontext is initialized
|
||||
Boolean completelyLoaded; // Indicates if image is completely loaded
|
||||
};
|
||||
|
||||
#endif /* _xfe_image_h */
|
||||
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