Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-11-26 22:32:46 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
16016ee0cf
gecko-dev/layout/base/nsPresContext.cpp

1849 lines
51 KiB
C++
Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (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.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsCOMPtr.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIPref.h"
#include "nsILinkHandler.h"
#include "nsIDocShellTreeItem.h"
#include "nsIStyleSet.h"
#include "nsIFrameManager.h"
#include "nsImageLoader.h"
#include "nsIContent.h"
#include "nsIFrame.h"
#include "nsIRenderingContext.h"
#include "nsIURL.h"
#include "nsIDocument.h"
#include "nsIStyleContext.h"
#include "nsLayoutAtoms.h"
#include "nsILookAndFeel.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsIURIContentListener.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIServiceManager.h"
#include "nsBoxLayoutState.h"
#include "nsIBox.h"
#include "nsIDOMElement.h"
#include "nsContentPolicyUtils.h"
#include "nsIScriptGlobalObject.h"
#include "nsIDOMWindow.h"
#include "nsNetUtil.h"
#include "nsXPIDLString.h"
#include "prprf.h"
#include "nsContentPolicyUtils.h"
#include "nsIScriptGlobalObject.h"
#include "nsIDOMDocument.h"
#ifdef IBMBIDI
#include "nsBidiPresUtils.h"
#endif // IBMBIDI
// Needed for Start/Stop of Image Animation
#include "imgIContainer.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsIImageFrame.h"
static nscolor
MakeColorPref(const char *colstr)
{
PRUint32 red, green, blue;
nscolor colorref;
// 4.x stored RGB color values as a string rather than as an int,
// thus we need to do this conversion
PR_sscanf(colstr, "#%02x%02x%02x", &red, &green, &blue);
colorref = NS_RGB(red, green, blue);
return colorref;
}
int PR_CALLBACK
nsPresContext::PrefChangedCallback(const char* aPrefName, void* instance_data)
{
nsPresContext* presContext = (nsPresContext*)instance_data;
NS_ASSERTION(nsnull != presContext, "bad instance data");
if (nsnull != presContext) {
presContext->PreferenceChanged(aPrefName);
}
return 0; // PREF_OK
}
#ifdef IBMBIDI
PRBool
IsVisualCharset(const nsAutoString& aCharset)
{
if (aCharset.EqualsIgnoreCase("ibm864") // Arabic//ahmed
|| aCharset.EqualsIgnoreCase("ibm862") // Hebrew
|| aCharset.EqualsIgnoreCase("iso-8859-8") ) { // Hebrew
return PR_TRUE; // visual text type
}
else {
return PR_FALSE; // logical text type
}
}
#endif // IBMBIDI
PR_STATIC_CALLBACK(PRBool) destroy_loads(nsHashKey *aKey, void *aData, void* closure)
{
nsISupports *sup = NS_REINTERPRET_CAST(nsISupports*, aData);
nsImageLoader *loader = NS_REINTERPRET_CAST(nsImageLoader*, sup);
loader->Destroy();
return PR_TRUE;
}
static NS_DEFINE_CID(kLookAndFeelCID, NS_LOOKANDFEEL_CID);
#include "nsContentCID.h"
static NS_DEFINE_CID(kEventStateManagerCID, NS_EVENTSTATEMANAGER_CID);
nsPresContext::nsPresContext()
: mDefaultVariableFont("serif", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(12)),
mDefaultFixedFont("monospace", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(10)),
mDefaultSerifFont("serif", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(12)),
mDefaultSansSerifFont("sans-serif", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(12)),
mDefaultMonospaceFont("monospace", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(10)),
mDefaultCursiveFont("cursive", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(12)),
mDefaultFantasyFont("fantasy", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
NS_FONT_WEIGHT_NORMAL, 0, NSIntPointsToTwips(12)),
mNoTheme(PR_FALSE)
{
NS_INIT_REFCNT();
mCompatibilityMode = eCompatibility_Standard;
mCompatibilityLocked = PR_FALSE;
mWidgetRenderingMode = eWidgetRendering_Gfx;
mImageAnimationMode = imgIContainer::kNormalAnimMode;
mImageAnimationModePref = imgIContainer::kNormalAnimMode;
SetBackgroundImageDraw(PR_TRUE); // always draw the background
SetBackgroundColorDraw(PR_TRUE);
mStopped = PR_FALSE;
mStopChrome = PR_TRUE;
mShell = nsnull;
mDefaultColor = NS_RGB(0x00, 0x00, 0x00);
mDefaultBackgroundColor = NS_RGB(0xFF, 0xFF, 0xFF);
nsILookAndFeel* look = nsnull;
if (NS_SUCCEEDED(GetLookAndFeel(&look)) && look) {
look->GetColor(nsILookAndFeel::eColor_WindowForeground, mDefaultColor);
look->GetColor(nsILookAndFeel::eColor_WindowBackground, mDefaultBackgroundColor);
NS_RELEASE(look);
}
mUseDocumentColors = PR_TRUE;
mUseDocumentFonts = PR_TRUE;
// the minimum font-size is unconstrained by default
mMinimumFontSize = 0;
mLinkColor = NS_RGB(0x33, 0x33, 0xFF);
mVisitedLinkColor = NS_RGB(0x66, 0x00, 0xCC);
mUnderlineLinks = PR_TRUE;
mUseFocusColors = PR_FALSE;
mFocusTextColor = mDefaultColor;
mFocusBackgroundColor = mDefaultBackgroundColor;
mFocusRingWidth = 1;
mFocusRingOnAnything = PR_FALSE;
mDefaultBackgroundImageAttachment = NS_STYLE_BG_ATTACHMENT_SCROLL;
mDefaultBackgroundImageRepeat = NS_STYLE_BG_REPEAT_XY;
mDefaultBackgroundImageOffsetX = mDefaultBackgroundImageOffsetY = 0;
mLanguageSpecificTransformType = eLanguageSpecificTransformType_Unknown;
mIsRenderingOnlySelection = PR_FALSE;
#ifdef IBMBIDI
mIsVisual = PR_FALSE;
mBidiUtils = nsnull;
mIsBidiSystem = PR_FALSE;
mBidi = 0;
#endif // IBMBIDI
}
nsPresContext::~nsPresContext()
{
mImageLoaders.Enumerate(destroy_loads);
if (mShell) {
nsCOMPtr<nsIDocument> doc;
mShell->GetDocument(getter_AddRefs(doc));
if (doc) {
doc->RemoveCharSetObserver(this);
}
}
mShell = nsnull;
if (mEventManager)
mEventManager->SetPresContext(nsnull); // unclear if this is needed, but can't hurt
// Unregister preference callbacks
if (mPrefs) {
mPrefs->UnregisterCallback("font.", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->UnregisterCallback("browser.display.", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->UnregisterCallback("browser.underline_anchors", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->UnregisterCallback("browser.anchor_color", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->UnregisterCallback("browser.visited_color", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->UnregisterCallback("network.image.imageBehavior", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->UnregisterCallback("image.animation_mode", nsPresContext::PrefChangedCallback, (void*)this);
#ifdef IBMBIDI
mPrefs->UnregisterCallback("bidi.", PrefChangedCallback, (void*)this);
#endif
}
#ifdef IBMBIDI
if (mBidiUtils) {
delete mBidiUtils;
}
#endif // IBMBIDI
}
NS_IMPL_ISUPPORTS2(nsPresContext, nsIPresContext, nsIObserver)
#define MAKE_FONT_PREF_KEY(_pref, _s0, _s1) \
_pref.Assign(_s0); \
_pref.Append(_s1);
static const char* const kGenericFont[] = {
".variable.",
".fixed.",
".serif.",
".sans-serif.",
".monospace.",
".cursive.",
".fantasy."
};
void
nsPresContext::GetFontPreferences()
{
if (!mPrefs || !mLanguage)
return;
/* Fetch the font prefs to be used -- see bug 61883 for details.
Not all prefs are needed upfront. Some are fallback prefs intended
for the GFX font sub-system...
1) unit : assumed to be the same for all language groups -------------
font.size.unit = px | pt XXX could be folded in the size... bug 90440
2) attributes for generic fonts --------------------------------------
font.default = serif | sans-serif - fallback generic font
font.name.[generic].[langGroup] = current user' selected font on the pref dialog
font.name-list.[generic].[langGroup] = fontname1, fontname2, ... [factory pre-built list]
font.size.[generic].[langGroup] = integer - settable by the user
font.size-adjust.[generic].[langGroup] = "float" - settable by the user
font.minimum-size.[langGroup] = integer - settable by the user
*/
float p2t;
GetScaledPixelsToTwips(&p2t);
mDefaultVariableFont.size = NSFloatPixelsToTwips((float)16, p2t);
mDefaultFixedFont.size = NSFloatPixelsToTwips((float)13, p2t);
nsAutoString langGroup;
nsCOMPtr<nsIAtom> langGroupAtom;
mLanguage->GetLanguageGroup(getter_AddRefs(langGroupAtom));
langGroupAtom->ToString(langGroup);
nsCAutoString pref;
nsXPIDLString value;
nsXPIDLCString cvalue;
// get the current applicable font-size unit
enum {eUnit_unknown = -1, eUnit_px, eUnit_pt};
PRInt32 unit = eUnit_px;
nsresult rv = mPrefs->CopyCharPref("font.size.unit", getter_Copies(cvalue));
if (NS_SUCCEEDED(rv)) {
if (!PL_strcmp(cvalue.get(), "px")) {
unit = eUnit_px;
}
else if (!PL_strcmp(cvalue.get(), "pt")) {
unit = eUnit_pt;
}
else {
NS_WARNING("unexpected font-size unit -- expected: 'px' or 'pt'");
unit = eUnit_unknown;
}
}
// get font.minimum-size.[langGroup]
PRInt32 size;
pref.Assign("font.minimum-size."); pref.Append(NS_ConvertUCS2toUTF8(langGroup));
rv = mPrefs->GetIntPref(pref.get(), &size);
if (NS_SUCCEEDED(rv)) {
if (unit == eUnit_px) {
mMinimumFontSize = NSFloatPixelsToTwips((float)size, p2t);
}
else if (unit == eUnit_pt) {
mMinimumFontSize = NSIntPointsToTwips(size);
}
}
// get attributes specific to each generic font
nsCAutoString generic_dot_langGroup;
for (PRInt32 eType = eDefaultFont_Variable; eType < eDefaultFont_COUNT; ++eType) {
generic_dot_langGroup.Assign(kGenericFont[eType]);
generic_dot_langGroup.Append(NS_ConvertUCS2toUTF8(langGroup));
nsFont* font;
switch (eType) {
case eDefaultFont_Variable: font = &mDefaultVariableFont; break;
case eDefaultFont_Fixed: font = &mDefaultFixedFont; break;
case eDefaultFont_Serif: font = &mDefaultSerifFont; break;
case eDefaultFont_SansSerif: font = &mDefaultSansSerifFont; break;
case eDefaultFont_Monospace: font = &mDefaultMonospaceFont; break;
case eDefaultFont_Cursive: font = &mDefaultCursiveFont; break;
case eDefaultFont_Fantasy: font = &mDefaultFantasyFont; break;
default: NS_ERROR("not reached - bogus to silence some compilers"); break;
}
// set the default variable font (the other fonts are seen as 'generic' fonts
// in GFX and will be queried there when hunting for alternative fonts)
if (eType == eDefaultFont_Variable) {
MAKE_FONT_PREF_KEY(pref, "font.name", generic_dot_langGroup);
rv = mPrefs->CopyUnicharPref(pref.get(), getter_Copies(value));
if (NS_SUCCEEDED(rv)) {
font->name.Assign(value);
}
else {
rv = mPrefs->CopyUnicharPref("font.default", getter_Copies(value));
if (NS_SUCCEEDED(rv)) {
mDefaultVariableFont.name.Assign(value);
}
}
}
else {
if (eType == eDefaultFont_Monospace) {
// This takes care of the confusion whereby people often expect "monospace"
// to have the same default font-size as "-moz-fixed" (this tentative
// size may be overwritten with the specific value for "monospace" when
// "font.size.monospace.[langGroup]" is read -- see below)
font->size = mDefaultFixedFont.size;
}
else if (eType != eDefaultFont_Fixed) {
// all the other generic fonts are initialized with the size of the
// variable font, but their specific size can supersede later -- see below
font->size = mDefaultVariableFont.size;
}
}
// Bug 84398: for spec purists, a different font-size only applies to the
// .variable. and .fixed. fonts and the other fonts should get |font-size-adjust|.
// The problem is that only GfxWin has the support for |font-size-adjust|. So for
// parity, we enable the ability to set a different font-size on all platforms.
// get font.size.[generic].[langGroup]
// size=0 means 'Auto', i.e., generic fonts retain the size of the variable font
MAKE_FONT_PREF_KEY(pref, "font.size", generic_dot_langGroup);
rv = mPrefs->GetIntPref(pref.get(), &size);
if (NS_SUCCEEDED(rv) && size > 0) {
if (unit == eUnit_px) {
font->size = NSFloatPixelsToTwips((float)size, p2t);
}
else if (unit == eUnit_pt) {
font->size = NSIntPointsToTwips(size);
}
}
// get font.size-adjust.[generic].[langGroup]
// XXX only applicable on GFX ports that handle |font-size-adjust|
MAKE_FONT_PREF_KEY(pref, "font.size-adjust", generic_dot_langGroup);
rv = mPrefs->CopyCharPref(pref.get(), getter_Copies(cvalue));
if (NS_SUCCEEDED(rv)) {
font->sizeAdjust = (float)atof(cvalue.get());
}
#ifdef DEBUG_rbs
nsCAutoString family(NS_ConvertUCS2toUTF8(font->name));
printf("%s Family-list:%s size:%d sizeAdjust:%.2f\n",
generic_dot_langGroup.get(), family.get(), font->size, font->sizeAdjust);
#endif
}
}
void
nsPresContext::GetDocumentColorPreferences()
{
PRBool usePrefColors = PR_TRUE;
PRBool boolPref;
nsXPIDLCString colorStr;
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(mContainer));
if (docShell) {
PRInt32 docShellType;
docShell->GetItemType(&docShellType);
if (nsIDocShellTreeItem::typeChrome == docShellType)
usePrefColors = PR_FALSE;
}
if (usePrefColors) {
if (NS_SUCCEEDED(mPrefs->GetBoolPref("browser.display.use_system_colors", &boolPref))) {
usePrefColors = !boolPref;
}
}
if (usePrefColors) {
if (NS_SUCCEEDED(mPrefs->CopyCharPref("browser.display.foreground_color", getter_Copies(colorStr)))) {
mDefaultColor = MakeColorPref(colorStr);
}
if (NS_SUCCEEDED(mPrefs->CopyCharPref("browser.display.background_color", getter_Copies(colorStr)))) {
mDefaultBackgroundColor = MakeColorPref(colorStr);
}
}
else {
// Without this here, checking the "use system colors" checkbox
// has no affect until the constructor is called again
mDefaultColor = NS_RGB(0x00, 0x00, 0x00);
mDefaultBackgroundColor = NS_RGB(0xFF, 0xFF, 0xFF);
nsCOMPtr<nsILookAndFeel> look;
if (NS_SUCCEEDED(GetLookAndFeel(getter_AddRefs(look))) && look) {
look->GetColor(nsILookAndFeel::eColor_WindowForeground, mDefaultColor);
look->GetColor(nsILookAndFeel::eColor_WindowBackground, mDefaultBackgroundColor);
}
}
if (NS_SUCCEEDED(mPrefs->GetBoolPref("browser.display.use_document_colors", &boolPref))) {
mUseDocumentColors = boolPref;
}
}
void
nsPresContext::GetUserPreferences()
{
PRInt32 prefInt;
if (NS_SUCCEEDED(mPrefs->GetIntPref("browser.display.base_font_scaler", &prefInt))) {
mFontScaler = prefInt;
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("nglayout.compatibility.mode", &prefInt))) {
// XXX this should really be a state on the webshell instead of using prefs
switch (prefInt) {
case 1:
mCompatibilityLocked = PR_TRUE;
mCompatibilityMode = eCompatibility_Standard;
break;
case 2:
mCompatibilityLocked = PR_TRUE;
mCompatibilityMode = eCompatibility_NavQuirks;
break;
case 0: // auto
default:
mCompatibilityLocked = PR_FALSE;
break;
}
}
else {
mCompatibilityLocked = PR_FALSE; // auto
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("nglayout.widget.mode", &prefInt))) {
mWidgetRenderingMode = (enum nsWidgetRendering)prefInt; // bad cast
}
// * document colors
GetDocumentColorPreferences();
// * link colors
PRBool boolPref;
nsXPIDLCString colorStr;
if (NS_SUCCEEDED(mPrefs->GetBoolPref("browser.underline_anchors", &boolPref))) {
mUnderlineLinks = boolPref;
}
if (NS_SUCCEEDED(mPrefs->CopyCharPref("browser.anchor_color", getter_Copies(colorStr)))) {
mLinkColor = MakeColorPref(colorStr);
}
if (NS_SUCCEEDED(mPrefs->CopyCharPref("browser.visited_color", getter_Copies(colorStr)))) {
mVisitedLinkColor = MakeColorPref(colorStr);
}
if (NS_SUCCEEDED(mPrefs->GetBoolPref("browser.display.use_focus_colors", &boolPref))) {
mUseFocusColors = boolPref;
mFocusTextColor = mDefaultColor;
mFocusBackgroundColor = mDefaultBackgroundColor;
if (NS_SUCCEEDED(mPrefs->CopyCharPref("browser.display.focus_text_color", getter_Copies(colorStr)))) {
mFocusTextColor = MakeColorPref(colorStr);
}
if (NS_SUCCEEDED(mPrefs->CopyCharPref("browser.display.focus_background_color", getter_Copies(colorStr)))) {
mFocusBackgroundColor = MakeColorPref(colorStr);
}
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("browser.display.focus_ring_width", &prefInt))) {
mFocusRingWidth = prefInt;
}
if (NS_SUCCEEDED(mPrefs->GetBoolPref("browser.display.focus_ring_on_anything", &boolPref))) {
mFocusRingOnAnything = boolPref;
}
// * use fonts?
if (NS_SUCCEEDED(mPrefs->GetIntPref("browser.display.use_document_fonts", &prefInt))) {
mUseDocumentFonts = prefInt == 0 ? PR_FALSE : PR_TRUE;
}
GetFontPreferences();
// * image animation
char* animatePref = 0;
nsresult rv = mPrefs->CopyCharPref("image.animation_mode", &animatePref);
if (NS_SUCCEEDED(rv) && animatePref) {
if (!nsCRT::strcmp(animatePref, "normal"))
mImageAnimationModePref = imgIContainer::kNormalAnimMode;
else if (!nsCRT::strcmp(animatePref, "none"))
mImageAnimationModePref = imgIContainer::kDontAnimMode;
else if (!nsCRT::strcmp(animatePref, "once"))
mImageAnimationModePref = imgIContainer::kLoopOnceAnimMode;
nsMemory::Free(animatePref);
}
#ifdef IBMBIDI
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.direction", &prefInt))) {
SET_BIDI_OPTION_DIRECTION(mBidi, prefInt);
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.texttype", &prefInt))) {
SET_BIDI_OPTION_TEXTTYPE(mBidi, prefInt);
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.controlstextmode", &prefInt))) {
SET_BIDI_OPTION_CONTROLSTEXTMODE(mBidi, prefInt);
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.clipboardtextmode", &prefInt))) {
SET_BIDI_OPTION_CLIPBOARDTEXTMODE(mBidi, prefInt);
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.numeral", &prefInt))) {
SET_BIDI_OPTION_NUMERAL(mBidi, prefInt);
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.support", &prefInt))) {
SET_BIDI_OPTION_SUPPORT(mBidi, prefInt);
}
if (NS_SUCCEEDED(mPrefs->GetIntPref("bidi.characterset", &prefInt))) {
SET_BIDI_OPTION_CHARACTERSET(mBidi, prefInt);
}
#endif
}
NS_IMETHODIMP
nsPresContext::GetCachedBoolPref(PRUint32 aPrefType, PRBool& aValue)
{
nsresult rv = NS_OK;
switch (aPrefType) {
case kPresContext_UseDocumentFonts :
aValue = mUseDocumentFonts;
break;
case kPresContext_UseDocumentColors:
aValue = mUseDocumentColors;
break;
case kPresContext_UnderlineLinks:
aValue = mUnderlineLinks;
break;
default :
rv = NS_ERROR_INVALID_ARG;
NS_ERROR("invalid arg");
}
return rv;
}
NS_IMETHODIMP
nsPresContext::GetCachedIntPref(PRUint32 aPrefType, PRInt32& aValue)
{
nsresult rv = NS_OK;
switch (aPrefType) {
case kPresContext_MinimumFontSize:
aValue = mMinimumFontSize;
break;
default:
rv = NS_ERROR_INVALID_ARG;
NS_ERROR("invalid arg");
}
return rv;
}
NS_IMETHODIMP
nsPresContext::ClearStyleDataAndReflow()
{
if (mShell) {
// Clear out all our style data.
nsCOMPtr<nsIStyleSet> set;
mShell->GetStyleSet(getter_AddRefs(set));
set->ClearStyleData(this, nsnull, nsnull);
// Have the root frame's style context remap its style based on the
// user preferences
nsIFrame* rootFrame;
mShell->GetRootFrame(&rootFrame);
if (rootFrame) {
// boxes know how to coelesce style changes. So if our root frame is a box
// then tell it to handle it. If its a block we are stuck with a full top to bottom
// reflow. -EDV
nsIFrame* child = nsnull;
rootFrame->FirstChild(this, nsnull, &child);
nsresult rv;
nsCOMPtr<nsIBox> box = do_QueryInterface(child, &rv);
if (NS_SUCCEEDED(rv) && box) {
nsBoxLayoutState state(this);
box->MarkStyleChange(state);
} else {
// Force a reflow of the root frame
// XXX We really should only do a reflow if a preference that affects
// formatting changed, e.g., a font change. If it's just a color change
// then we only need to repaint...
mShell->StyleChangeReflow();
}
}
}
return NS_OK;
}
void
nsPresContext::PreferenceChanged(const char* aPrefName)
{
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(mContainer));
if (docShell) {
PRInt32 docShellType;
docShell->GetItemType(&docShellType);
if (nsIDocShellTreeItem::typeChrome == docShellType)
return;
}
// Initialize our state from the user preferences
GetUserPreferences();
// update the presShell: tell it to set the preference style rules up
if (mShell) {
mShell->SetPreferenceStyleRules(PR_TRUE);
}
if (mDeviceContext) {
mDeviceContext->FlushFontCache();
ClearStyleDataAndReflow();
}
}
NS_IMETHODIMP
nsPresContext::Init(nsIDeviceContext* aDeviceContext)
{
NS_ASSERTION(!(mInitialized == PR_TRUE), "attempt to reinit pres context");
mDeviceContext = dont_QueryInterface(aDeviceContext);
mLangService = do_GetService(NS_LANGUAGEATOMSERVICE_CONTRACTID);
mPrefs = do_GetService(NS_PREF_CONTRACTID);
if (mPrefs) {
// Register callbacks so we're notified when the preferences change
mPrefs->RegisterCallback("font.", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->RegisterCallback("browser.display.", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->RegisterCallback("browser.underline_anchors", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->RegisterCallback("browser.anchor_color", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->RegisterCallback("browser.visited_color", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->RegisterCallback("network.image.imageBehavior", nsPresContext::PrefChangedCallback, (void*)this);
mPrefs->RegisterCallback("image.animation_mode", nsPresContext::PrefChangedCallback, (void*)this);
#ifdef IBMBIDI
mPrefs->RegisterCallback("bidi.", PrefChangedCallback, (void*)this);
#endif
// Initialize our state from the user preferences
GetUserPreferences();
}
#ifdef DEBUG
mInitialized = PR_TRUE;
#endif
return NS_OK;
}
// Note: We don't hold a reference on the shell; it has a reference to
// us
NS_IMETHODIMP
nsPresContext::SetShell(nsIPresShell* aShell)
{
mShell = aShell;
if (nsnull != mShell) {
nsCOMPtr<nsIDocument> doc;
if (NS_SUCCEEDED(mShell->GetDocument(getter_AddRefs(doc)))) {
NS_ASSERTION(doc, "expect document here");
if (doc) {
doc->GetBaseURL(*getter_AddRefs(mBaseURL));
if (mBaseURL) {
PRBool isChrome = PR_FALSE;
PRBool isRes = PR_FALSE;
mBaseURL->SchemeIs("chrome", &isChrome);
mBaseURL->SchemeIs("resource", &isRes);
if (!isChrome && !isRes)
mImageAnimationMode = mImageAnimationModePref;
else
mImageAnimationMode = imgIContainer::kNormalAnimMode;
}
if (mLangService) {
nsAutoString charset;
doc->AddCharSetObserver(this);
doc->GetDocumentCharacterSet(charset);
UpdateCharSet(charset.get());
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetShell(nsIPresShell** aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mShell;
NS_IF_ADDREF(mShell);
return NS_OK;
}
void
nsPresContext::UpdateCharSet(const PRUnichar* aCharSet)
{
if (mLangService) {
mLangService->LookupCharSet(aCharSet, getter_AddRefs(mLanguage));
GetFontPreferences();
if (mLanguage) {
nsCOMPtr<nsIAtom> langGroupAtom;
mLanguage->GetLanguageGroup(getter_AddRefs(langGroupAtom));
NS_ASSERTION(langGroupAtom, "non-NULL language group atom expected");
if (langGroupAtom.get() == nsLayoutAtoms::Japanese) {
mLanguageSpecificTransformType =
eLanguageSpecificTransformType_Japanese;
}
else if (langGroupAtom.get() == nsLayoutAtoms::Korean) {
mLanguageSpecificTransformType =
eLanguageSpecificTransformType_Korean;
}
else {
mLanguageSpecificTransformType =
eLanguageSpecificTransformType_None;
}
}
}
#ifdef IBMBIDI
//ahmed
mCharset=aCharSet;
SetVisualMode(IsVisualCharset(mCharset) );
#endif // IBMBIDI
}
NS_IMETHODIMP
nsPresContext::Observe(nsISupports* aSubject,
const char* aTopic,
const PRUnichar* aData)
{
if (!nsCRT::strcmp(aTopic, "charset")) {
UpdateCharSet(aData);
if (mDeviceContext) {
mDeviceContext->FlushFontCache();
ClearStyleDataAndReflow();
}
return NS_OK;
}
NS_WARNING("unrecognized topic in nsPresContext::Observe");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsPresContext::GetCompatibilityMode(nsCompatibility* aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mCompatibilityMode;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetCompatibilityMode(nsCompatibility aMode)
{
if (! mCompatibilityLocked) {
mCompatibilityMode = aMode;
}
// enable/disable the QuirkSheet
NS_ASSERTION(mShell, "PresShell must be set on PresContext before calling nsPresContext::SetCompatibilityMode");
if (mShell) {
nsCOMPtr<nsIStyleSet> set;
nsresult rv = mShell->GetStyleSet(getter_AddRefs(set));
if (NS_SUCCEEDED(rv) && set) {
set->EnableQuirkStyleSheet((mCompatibilityMode != eCompatibility_Standard) ? PR_TRUE : PR_FALSE);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetWidgetRenderingMode(nsWidgetRendering* aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mWidgetRenderingMode;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetWidgetRenderingMode(nsWidgetRendering aMode)
{
mWidgetRenderingMode = aMode;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetImageAnimationMode(PRUint16* aModeResult)
{
NS_PRECONDITION(aModeResult, "null out param");
*aModeResult = mImageAnimationMode;
return NS_OK;
}
// Helper function for setting Anim Mode on image
static void SetImgAnimModeOnImgReq(imgIRequest* aImgReq, PRUint16 aMode)
{
if (aImgReq != nsnull) {
nsCOMPtr<imgIContainer> imgCon;
aImgReq->GetImage(getter_AddRefs(imgCon));
if (imgCon) {
imgCon->SetAnimationMode(aMode);
}
}
}
// Enumeration call back for HashTable
PR_STATIC_CALLBACK(PRBool) set_animation_mode(nsHashKey *aKey, void *aData, void* closure)
{
nsISupports *sup = NS_REINTERPRET_CAST(nsISupports*, aData);
nsImageLoader *loader = NS_REINTERPRET_CAST(nsImageLoader*, sup);
nsCOMPtr<imgIRequest> imgReq;
loader->GetRequest(getter_AddRefs(imgReq));
SetImgAnimModeOnImgReq(imgReq, (PRUint16)NS_PTR_TO_INT32(closure));
return PR_TRUE;
}
// IMPORTANT: Assumption is that all images for a Presentation
// have the same Animation Mode (pavlov said this was OK)
//
// Walks content and set the animation mode
// this is a way to turn on/off image animations
void nsPresContext::SetImgAnimations(nsCOMPtr<nsIContent>& aParent, PRUint16 aMode)
{
nsCOMPtr<nsIDOMHTMLImageElement> imgContent(do_QueryInterface(aParent));
if (imgContent) {
nsIFrame* frame;
mShell->GetPrimaryFrameFor(aParent, &frame);
if (frame != nsnull) {
nsIImageFrame* imgFrame = nsnull;
CallQueryInterface(frame, &imgFrame);
if (imgFrame != nsnull) {
nsCOMPtr<imgIRequest> imgReq;
imgFrame->GetImageRequest(getter_AddRefs(imgReq));
SetImgAnimModeOnImgReq(imgReq, aMode);
}
}
}
PRInt32 count;
aParent->ChildCount(count);
for (PRInt32 i=0;i<count;i++) {
nsCOMPtr<nsIContent> child;
aParent->ChildAt(i, *getter_AddRefs(child));
if (child) {
SetImgAnimations(child, aMode);
}
}
}
NS_IMETHODIMP
nsPresContext::SetImageAnimationMode(PRUint16 aMode)
{
NS_ASSERTION(aMode == imgIContainer::kNormalAnimMode ||
aMode == imgIContainer::kDontAnimMode ||
aMode == imgIContainer::kLoopOnceAnimMode, "Wrong Animation Mode is being set!");
// This hash table contains a list of background images
// so iterate over it and set the mode
mImageLoaders.Enumerate(set_animation_mode, (void*)aMode);
// Now walk the content tree and set the animation mode
// on all the images
nsCOMPtr<nsIDocument> doc;
if (mShell != nsnull) {
mShell->GetDocument(getter_AddRefs(doc));
if (doc) {
nsCOMPtr<nsIContent> rootContent;
doc->GetRootContent(getter_AddRefs(rootContent));
if (rootContent) {
SetImgAnimations(rootContent, aMode);
}
}
}
mImageAnimationMode = aMode;
return NS_OK;
}
/* This function has now been deprecated. It is no longer necesary to
* hold on to presContext just to get a nsLookAndFeel. nsLookAndFeel is
* now a service provided by ServiceManager.
*/
NS_IMETHODIMP
nsPresContext::GetLookAndFeel(nsILookAndFeel** aLookAndFeel)
{
NS_PRECONDITION(aLookAndFeel, "null out param");
nsresult result = NS_OK;
if (! mLookAndFeel) {
mLookAndFeel = do_GetService(kLookAndFeelCID,&result);
}
*aLookAndFeel = mLookAndFeel;
NS_IF_ADDREF(*aLookAndFeel);
return result;
}
NS_IMETHODIMP
nsPresContext::GetBaseURL(nsIURI** aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mBaseURL;
NS_IF_ADDREF(*aResult);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::ResolveStyleContextFor(nsIContent* aContent,
nsIStyleContext* aParentContext,
PRBool aForceUnique,
nsIStyleContext** aResult)
{
NS_PRECONDITION(aResult, "null out param");
nsIStyleContext* result = nsnull;
nsCOMPtr<nsIStyleSet> set;
nsresult rv = mShell->GetStyleSet(getter_AddRefs(set));
if (NS_SUCCEEDED(rv)) {
if (set) {
result = set->ResolveStyleFor(this, aContent, aParentContext,
aForceUnique);
if (nsnull == result) {
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
}
*aResult = result;
return rv;
}
NS_IMETHODIMP
nsPresContext::ResolveStyleContextForNonElement(
nsIStyleContext* aParentContext,
PRBool aForceUnique,
nsIStyleContext** aResult)
{
NS_PRECONDITION(aResult, "null out param");
nsIStyleContext* result = nsnull;
nsCOMPtr<nsIStyleSet> set;
nsresult rv = mShell->GetStyleSet(getter_AddRefs(set));
if (NS_SUCCEEDED(rv) && set) {
result = set->ResolveStyleForNonElement(this, aParentContext,
aForceUnique);
if (!result)
rv = NS_ERROR_OUT_OF_MEMORY;
}
*aResult = result;
return rv;
}
NS_IMETHODIMP
nsPresContext::ResolvePseudoStyleContextFor(nsIContent* aParentContent,
nsIAtom* aPseudoTag,
nsIStyleContext* aParentContext,
PRBool aForceUnique,
nsIStyleContext** aResult)
{
return ResolvePseudoStyleWithComparator(aParentContent, aPseudoTag, aParentContext,
aForceUnique, nsnull, aResult);
}
NS_IMETHODIMP
nsPresContext::ResolvePseudoStyleWithComparator(nsIContent* aParentContent,
nsIAtom* aPseudoTag,
nsIStyleContext* aParentContext,
PRBool aForceUnique,
nsICSSPseudoComparator* aComparator,
nsIStyleContext** aResult)
{
NS_PRECONDITION(aResult, "null out param");
nsIStyleContext* result = nsnull;
nsCOMPtr<nsIStyleSet> set;
nsresult rv = mShell->GetStyleSet(getter_AddRefs(set));
if (NS_SUCCEEDED(rv)) {
if (set) {
result = set->ResolvePseudoStyleFor(this, aParentContent, aPseudoTag,
aParentContext, aForceUnique, aComparator);
if (nsnull == result) {
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
}
*aResult = result;
return rv;
}
NS_IMETHODIMP
nsPresContext::ProbePseudoStyleContextFor(nsIContent* aParentContent,
nsIAtom* aPseudoTag,
nsIStyleContext* aParentContext,
PRBool aForceUnique,
nsIStyleContext** aResult)
{
NS_PRECONDITION(aResult, "null out param");
nsIStyleContext* result = nsnull;
nsCOMPtr<nsIStyleSet> set;
nsresult rv = mShell->GetStyleSet(getter_AddRefs(set));
if (NS_SUCCEEDED(rv)) {
if (set) {
result = set->ProbePseudoStyleFor(this, aParentContent, aPseudoTag,
aParentContext, aForceUnique);
}
}
*aResult = result;
return rv;
}
NS_IMETHODIMP
nsPresContext::ReParentStyleContext(nsIFrame* aFrame,
nsIStyleContext* aNewParentContext)
{
NS_PRECONDITION(aFrame, "null ptr");
if (! aFrame) {
return NS_ERROR_NULL_POINTER;
}
nsCOMPtr<nsIFrameManager> manager;
nsresult rv = mShell->GetFrameManager(getter_AddRefs(manager));
if (NS_SUCCEEDED(rv) && manager) {
rv = manager->ReParentStyleContext(this, aFrame, aNewParentContext);
}
return rv;
}
NS_IMETHODIMP
nsPresContext::AllocateFromShell(size_t aSize, void** aResult)
{
if (mShell)
return mShell->AllocateFrame(aSize, aResult);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::FreeToShell(size_t aSize, void* aFreeChunk)
{
if (mShell)
return mShell->FreeFrame(aSize, aFreeChunk);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetMetricsFor(const nsFont& aFont, nsIFontMetrics** aResult)
{
NS_PRECONDITION(aResult, "null out param");
nsIFontMetrics* metrics = nsnull;
if (mDeviceContext) {
nsCOMPtr<nsIAtom> langGroup;
if (mLanguage) {
mLanguage->GetLanguageGroup(getter_AddRefs(langGroup));
}
mDeviceContext->GetMetricsFor(aFont, langGroup, metrics);
}
*aResult = metrics;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultFont(PRUint8 aFontID, const nsFont** aResult)
{
nsresult rv = NS_OK;
switch (aFontID) {
// Special (our default variable width font and fixed width font)
case kPresContext_DefaultVariableFont_ID:
*aResult = &mDefaultVariableFont;
break;
case kPresContext_DefaultFixedFont_ID:
*aResult = &mDefaultFixedFont;
break;
// CSS
case kGenericFont_serif:
*aResult = &mDefaultSerifFont;
break;
case kGenericFont_sans_serif:
*aResult = &mDefaultSansSerifFont;
break;
case kGenericFont_monospace:
*aResult = &mDefaultMonospaceFont;
break;
case kGenericFont_cursive:
*aResult = &mDefaultCursiveFont;
break;
case kGenericFont_fantasy:
*aResult = &mDefaultFantasyFont;
break;
default:
rv = NS_ERROR_INVALID_ARG;
NS_ERROR("invalid arg");
break;
}
return rv;
}
NS_IMETHODIMP
nsPresContext::SetDefaultFont(PRUint8 aFontID, const nsFont& aFont)
{
nsresult rv = NS_OK;
switch (aFontID) {
// Special (our default variable width font and fixed width font)
case kPresContext_DefaultVariableFont_ID:
mDefaultVariableFont = aFont;
break;
case kPresContext_DefaultFixedFont_ID:
mDefaultFixedFont = aFont;
break;
// CSS
case kGenericFont_serif:
mDefaultSerifFont = aFont;
break;
case kGenericFont_sans_serif:
mDefaultSansSerifFont = aFont;
break;
case kGenericFont_monospace:
mDefaultMonospaceFont = aFont;
break;
case kGenericFont_cursive:
mDefaultCursiveFont = aFont;
break;
case kGenericFont_fantasy:
mDefaultFantasyFont = aFont;
break;
default:
rv = NS_ERROR_INVALID_ARG;
NS_ERROR("invalid arg");
break;
}
return rv;
}
NS_IMETHODIMP
nsPresContext::GetFontScaler(PRInt32* aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mFontScaler;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetFontScaler(PRInt32 aScaler)
{
mFontScaler = aScaler;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultColor(nscolor* aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mDefaultColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultBackgroundColor(nscolor* aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mDefaultBackgroundColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultBackgroundImage(nsString& aImage)
{
aImage = mDefaultBackgroundImage;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultBackgroundImageRepeat(PRUint8* aRepeat)
{
NS_PRECONDITION(aRepeat, "null out param");
*aRepeat = mDefaultBackgroundImageRepeat;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultBackgroundImageOffset(nscoord* aX, nscoord* aY)
{
NS_PRECONDITION(aX && aY, "null out param");
*aX = mDefaultBackgroundImageOffsetX;
*aY = mDefaultBackgroundImageOffsetY;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultBackgroundImageAttachment(PRUint8* aAttachment)
{
NS_PRECONDITION(aAttachment, "null out param");
*aAttachment = mDefaultBackgroundImageAttachment;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultLinkColor(nscolor* aColor)
{
NS_PRECONDITION(aColor, "null out param");
*aColor = mLinkColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDefaultVisitedLinkColor(nscolor* aColor)
{
NS_PRECONDITION(aColor, "null out param");
*aColor = mVisitedLinkColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetFocusRingOnAnything(PRBool& aFocusRingOnAnything)
{
aFocusRingOnAnything = mFocusRingOnAnything;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetUseFocusColors(PRBool& aUseFocusColors)
{
aUseFocusColors = mUseFocusColors;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetFocusTextColor(nscolor* aColor)
{
NS_PRECONDITION(aColor, "null out param");
*aColor = mFocusTextColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetFocusBackgroundColor(nscolor* aColor)
{
NS_PRECONDITION(aColor, "null out param");
*aColor = mFocusBackgroundColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetFocusRingWidth(PRUint8 *aFocusRingWidth)
{
NS_PRECONDITION(aFocusRingWidth, "null out param");
*aFocusRingWidth = mFocusRingWidth;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultColor(nscolor aColor)
{
mDefaultColor = aColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultBackgroundColor(nscolor aColor)
{
mDefaultBackgroundColor = aColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultBackgroundImage(const nsString& aImage)
{
mDefaultBackgroundImage = aImage;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultBackgroundImageRepeat(PRUint8 aRepeat)
{
mDefaultBackgroundImageRepeat = aRepeat;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultBackgroundImageOffset(nscoord aX, nscoord aY)
{
mDefaultBackgroundImageOffsetX = aX;
mDefaultBackgroundImageOffsetY = aY;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultBackgroundImageAttachment(PRUint8 aAttachment)
{
mDefaultBackgroundImageAttachment = aAttachment;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultLinkColor(nscolor aColor)
{
mLinkColor = aColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetDefaultVisitedLinkColor(nscolor aColor)
{
mVisitedLinkColor = aColor;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetVisibleArea(nsRect& aResult)
{
aResult = mVisibleArea;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetVisibleArea(const nsRect& r)
{
mVisibleArea = r;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetPixelsToTwips(float* aResult) const
{
NS_PRECONDITION(aResult, "null out param");
float p2t = 1.0f;
if (mDeviceContext) {
mDeviceContext->GetDevUnitsToAppUnits(p2t);
}
*aResult = p2t;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetTwipsToPixels(float* aResult) const
{
NS_PRECONDITION(aResult, "null out param");
float app2dev = 1.0f;
if (mDeviceContext) {
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
}
*aResult = app2dev;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetTwipsToPixelsForFonts(float* aResult) const
{
NS_PRECONDITION(nsnull != aResult, "null ptr");
if (nsnull == aResult) {
return NS_ERROR_NULL_POINTER;
}
float app2dev = 1.0f;
if (mDeviceContext) {
#ifdef NS_PRINT_PREVIEW
// If an alternative DC is available we want to use
// it to get the scaling factor for fonts. Usually, the AltDC
// is a printing DC so therefore we need to get the printers
// scaling values for calculating the font heights
nsCOMPtr<nsIDeviceContext> altDC;
mDeviceContext->GetAltDevice(getter_AddRefs(altDC));
if (altDC) {
altDC->GetAppUnitsToDevUnits(app2dev);
} else {
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
}
#else
mDeviceContext->GetAppUnitsToDevUnits(app2dev);
#endif
}
*aResult = app2dev;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetScaledPixelsToTwips(float* aResult) const
{
NS_PRECONDITION(aResult, "null out param");
float scale = 1.0f;
if (mDeviceContext)
{
float p2t;
mDeviceContext->GetDevUnitsToAppUnits(p2t);
mDeviceContext->GetCanonicalPixelScale(scale);
scale = p2t * scale;
}
*aResult = scale;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetDeviceContext(nsIDeviceContext** aResult) const
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mDeviceContext;
NS_IF_ADDREF(*aResult);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetImageLoadFlags(nsLoadFlags& aLoadFlags)
{
aLoadFlags = nsIRequest::LOAD_NORMAL;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::LoadImage(const nsString& aURL,
nsIFrame* aTargetFrame,
imgIRequest **aRequest)
{
// look and see if we have a loader for the target frame.
nsresult rv;
nsVoidKey key(aTargetFrame);
nsImageLoader *loader = NS_REINTERPRET_CAST(nsImageLoader*, mImageLoaders.Get(&key)); // addrefs
nsCOMPtr<nsIDocument> doc;
rv = mShell->GetDocument(getter_AddRefs(doc));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIURI> baseURI;
doc->GetBaseURL(*getter_AddRefs(baseURI));
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), aURL, nsnull, baseURI);
if (!loader) {
nsCOMPtr<nsIContent> content;
aTargetFrame->GetContent(getter_AddRefs(content));
// Check with the content-policy things to make sure this load is permitted.
nsresult rv;
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(content));
if (content && element) {
nsCOMPtr<nsIDocument> document;
rv = content->GetDocument(*getter_AddRefs(document));
// If there is no document, skip the policy check
if (document) {
nsCOMPtr<nsIScriptGlobalObject> globalScript;
rv = document->GetScriptGlobalObject(getter_AddRefs(globalScript));
if (globalScript) {
nsCOMPtr<nsIDOMWindow> domWin(do_QueryInterface(globalScript));
PRBool shouldLoad = PR_TRUE;
rv = NS_CheckContentLoadPolicy(nsIContentPolicy::IMAGE,
uri, element, domWin, &shouldLoad);
if (NS_SUCCEEDED(rv) && !shouldLoad)
return NS_ERROR_FAILURE;
}
}
}
nsImageLoader *newLoader = new nsImageLoader();
if (!newLoader)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(newLoader); // new
nsCOMPtr<nsISupports> sup;
newLoader->QueryInterface(NS_GET_IID(nsISupports), getter_AddRefs(sup));
loader = NS_REINTERPRET_CAST(nsImageLoader*, sup.get());
loader->Init(aTargetFrame, this);
mImageLoaders.Put(&key, sup);
}
// Allow for a null target frame argument (for precached images)
if (aTargetFrame) {
// Mark frame as having loaded an image
nsFrameState state;
aTargetFrame->GetFrameState(&state);
state |= NS_FRAME_HAS_LOADED_IMAGES;
aTargetFrame->SetFrameState(state);
}
loader->Load(uri);
loader->GetRequest(aRequest);
NS_RELEASE(loader);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::StopImagesFor(nsIFrame* aTargetFrame)
{
nsVoidKey key(aTargetFrame);
nsImageLoader *loader = NS_REINTERPRET_CAST(nsImageLoader*, mImageLoaders.Get(&key)); // addrefs
if (loader) {
loader->Destroy();
NS_RELEASE(loader);
mImageLoaders.Remove(&key);
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetLinkHandler(nsILinkHandler* aHandler)
{
mLinkHandler = aHandler;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetLinkHandler(nsILinkHandler** aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mLinkHandler;
NS_IF_ADDREF(mLinkHandler);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetContainer(nsISupports* aHandler)
{
mContainer = aHandler;
if (mContainer) {
GetDocumentColorPreferences();
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetContainer(nsISupports** aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mContainer;
NS_IF_ADDREF(mContainer);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetEventStateManager(nsIEventStateManager** aManager)
{
NS_PRECONDITION(nsnull != aManager, "null ptr");
if (nsnull == aManager) {
return NS_ERROR_NULL_POINTER;
}
if (!mEventManager) {
nsresult rv;
mEventManager = do_CreateInstance(kEventStateManagerCID,&rv);
if (NS_FAILED(rv)) {
return rv;
}
}
//Not refcnted, set null in destructor
mEventManager->SetPresContext(this);
*aManager = mEventManager;
NS_IF_ADDREF(*aManager);
return NS_OK;
}
#ifdef IBMBIDI
//ahmed
NS_IMETHODIMP
nsPresContext::IsArabicEncoding(PRBool& aResult)
{
aResult=PR_FALSE;
if ( (mCharset.EqualsIgnoreCase("ibm864") )||(mCharset.EqualsIgnoreCase("ibm864i") )||(mCharset.EqualsIgnoreCase("windows-1256") )||(mCharset.EqualsIgnoreCase("iso-8859-6") ))
aResult=PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::IsVisRTL(PRBool& aResult)
{
aResult=PR_FALSE;
if ( (mIsVisual)&&(GET_BIDI_OPTION_DIRECTION(mBidi) == IBMBIDI_TEXTDIRECTION_RTL) )
aResult=PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetBidiEnabled(PRBool* aBidiEnabled) const
{
NS_ENSURE_ARG_POINTER(aBidiEnabled);
*aBidiEnabled = PR_FALSE;
NS_ASSERTION(mShell, "PresShell must be set on PresContext before calling nsPresContext::GetBidiEnabled");
if (mShell) {
nsCOMPtr<nsIDocument> doc;
mShell->GetDocument(getter_AddRefs(doc) );
NS_ASSERTION(doc, "PresShell has no document in nsPresContext::GetBidiEnabled");
if (doc) {
doc->GetBidiEnabled(aBidiEnabled);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetBidiEnabled(PRBool aBidiEnabled) const
{
if (mShell) {
nsCOMPtr<nsIDocument> doc;
mShell->GetDocument(getter_AddRefs(doc) );
if (doc) {
doc->SetBidiEnabled(aBidiEnabled);
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::SetVisualMode(PRBool aIsVisual)
{
mIsVisual = aIsVisual;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::IsVisualMode(PRBool& aIsVisual) const
{
aIsVisual = mIsVisual;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetBidiUtils(nsBidiPresUtils** aBidiUtils)
{
nsresult rv = NS_OK;
if (!mBidiUtils) {
mBidiUtils = new nsBidiPresUtils;
if (!mBidiUtils) {
rv = NS_ERROR_OUT_OF_MEMORY;
}
}
*aBidiUtils = mBidiUtils;
return rv;
}
NS_IMETHODIMP nsPresContext::SetBidi(PRUint32 aSource, PRBool aForceReflow)
{
mBidi = aSource;
if (IBMBIDI_TEXTDIRECTION_RTL == GET_BIDI_OPTION_DIRECTION(mBidi)
|| IBMBIDI_NUMERAL_HINDI == GET_BIDI_OPTION_NUMERAL(mBidi)) {
SetBidiEnabled(PR_TRUE);
}
if (IBMBIDI_TEXTTYPE_VISUAL == GET_BIDI_OPTION_TEXTTYPE(mBidi)) {
SetVisualMode(PR_TRUE);
}
else if (IBMBIDI_TEXTTYPE_LOGICAL == GET_BIDI_OPTION_TEXTTYPE(mBidi)) {
SetVisualMode(PR_FALSE);
}
else {
SetVisualMode(IsVisualCharset(mCharset) );
}
if (mShell && aForceReflow) {
ClearStyleDataAndReflow();
}
return NS_OK;
}
NS_IMETHODIMP nsPresContext::GetBidi(PRUint32* aDest)
{
if (aDest)
*aDest = mBidi;
return NS_OK;
}
//Mohamed 17-1-01
NS_IMETHODIMP
nsPresContext::SetIsBidiSystem(PRBool aIsBidi)
{
mIsBidiSystem = aIsBidi;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetIsBidiSystem(PRBool& aResult) const
{
aResult = mIsBidiSystem;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetBidiCharset(nsAWritableString &aCharSet)
{
aCharSet = mCharset;
return NS_OK;
}
//Mohamed End
#endif //IBMBIDI
NS_IMETHODIMP
nsPresContext::GetLanguage(nsILanguageAtom** aLanguage)
{
NS_PRECONDITION(aLanguage, "null out param");
*aLanguage = mLanguage;
NS_IF_ADDREF(*aLanguage);
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetLanguageSpecificTransformType(
nsLanguageSpecificTransformType* aType)
{
NS_PRECONDITION(aType, "null out param");
*aType = mLanguageSpecificTransformType;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::IsRenderingOnlySelection(PRBool* aResult)
{
NS_PRECONDITION(aResult, "null out param");
*aResult = mIsRenderingOnlySelection;
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::GetTheme(nsITheme** aResult)
{
if (!mNoTheme && !mTheme) {
mTheme = do_GetService("@mozilla.org/chrome/chrome-native-theme;1");
if (!mTheme)
mNoTheme = PR_TRUE;
}
*aResult = mTheme;
NS_IF_ADDREF(*aResult);
return mTheme ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsPresContext::ThemeChanged()
{
// Tell the theme that it changed, so it can flush any handles to stale theme
// data.
if (mTheme)
mTheme->ThemeChanged();
// Clear all cached nsILookAndFeel colors.
if (mLookAndFeel)
mLookAndFeel->LookAndFeelChanged();
if (!mShell)
return NS_OK;
return mShell->ReconstructStyleData(PR_FALSE);
}
#ifdef MOZ_REFLOW_PERF
NS_IMETHODIMP
nsPresContext::CountReflows(const char * aName, PRUint32 aType, nsIFrame * aFrame)
{
if (mShell) {
mShell->CountReflows(aName, aType, aFrame);
}
return NS_OK;
}
NS_IMETHODIMP
nsPresContext::PaintCount(const char * aName, nsIRenderingContext* aRenderingContext, nsIFrame * aFrame, PRUint32 aColor)
{
if (mShell) {
mShell->PaintCount(aName, aRenderingContext, this, aFrame, aColor);
}
return NS_OK;
}
#endif
Reference in New Issue View Git Blame Copy Permalink