зеркало из https://github.com/mozilla/pjs.git
595 строки
15 KiB
C++
595 строки
15 KiB
C++
#include "nsButtonFrameRenderer.h"
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#include "nsIRenderingContext.h"
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#include "nsCSSRendering.h"
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#include "nsIPresContext.h"
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#include "nsGenericHTMLElement.h"
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#define ACTIVE "active"
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#define HOVER "hover"
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#define NORMAL ""
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#define FOCUS "focus"
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#define ENABLED "enabled"
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#define DISABLED "disabled"
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nsButtonFrameRenderer::nsButtonFrameRenderer()
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{
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mNameSpace = kNameSpaceID_HTML;
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}
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nsButtonFrameRenderer::~nsButtonFrameRenderer()
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{
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}
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void
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nsButtonFrameRenderer::SetNameSpace(PRInt32 aNameSpace)
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{
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mNameSpace = aNameSpace;
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}
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void
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nsButtonFrameRenderer::SetFrame(nsIFrame* aFrame, nsIPresContext& aPresContext)
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{
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mFrame = aFrame;
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ReResolveStyles(aPresContext);
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}
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nsString
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nsButtonFrameRenderer::GetPseudoClassAttribute()
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{
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// get the content
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nsCOMPtr<nsIContent> content;
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mFrame->GetContent(getter_AddRefs(content));
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// create and atom for the pseudo class
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nsCOMPtr<nsIAtom> atom = do_QueryInterface(NS_NewAtom("pseudoclass"));
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// get the attribute
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nsAutoString value;
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content->GetAttribute(mNameSpace, atom, value);
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/*
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char ch[256];
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value.ToCString(ch,256);
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printf("getting pseudo='%s'\n",ch);
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*/
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return value;
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}
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void
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nsButtonFrameRenderer::SetPseudoClassAttribute(const nsString& value, PRBool notify)
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{
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// get the content
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nsCOMPtr<nsIContent> content;
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mFrame->GetContent(getter_AddRefs(content));
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// create and atom for the pseudo class
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nsCOMPtr<nsIAtom> atom = do_QueryInterface(NS_NewAtom("pseudoclass"));
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nsString pseudo = value;
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// remove whitespace
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pseudo.Trim(" ");
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pseudo.CompressWhitespace();
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// set it
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content->SetAttribute(mNameSpace, atom, pseudo, notify);
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/*
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char ch[256];
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pseudo.ToCString(ch,256);
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printf("setting pseudo='%s'\n",ch);
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*/
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}
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void
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nsButtonFrameRenderer::SetState(ButtonState state, PRBool notify)
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{
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// get the pseudo class
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nsString pseudo = GetPseudoClassAttribute();
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// remove all other states and add new state
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switch (state)
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{
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case hover:
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RemoveClass(pseudo, ACTIVE);
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AddClass(pseudo, HOVER);
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break;
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case active:
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RemoveClass(pseudo, HOVER);
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AddClass(pseudo, ACTIVE);
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break;
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case normal:
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RemoveClass(pseudo, HOVER);
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RemoveClass(pseudo, ACTIVE);
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break;
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}
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// set the pseudo class
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SetPseudoClassAttribute(pseudo, notify);
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}
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void
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nsButtonFrameRenderer::SetFocus(PRBool aFocus, PRBool notify)
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{
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ToggleClass(aFocus, FOCUS, notify);
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}
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void
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nsButtonFrameRenderer::SetDisabled(PRBool aDisabled, PRBool notify)
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{
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// get the pseudo class
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nsString pseudo = GetPseudoClassAttribute();
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// if focus add it
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if (aDisabled) {
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AddClass(pseudo, DISABLED);
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RemoveClass(pseudo, ENABLED);
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} else {
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RemoveClass(pseudo, DISABLED);
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AddClass(pseudo, ENABLED);
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}
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// set pseudo class
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SetPseudoClassAttribute(pseudo, notify);
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}
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nsButtonFrameRenderer::ButtonState
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nsButtonFrameRenderer::GetState()
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{
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nsString pseudo = GetPseudoClassAttribute();
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PRInt32 index = IndexOfClass(pseudo, HOVER);
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if (index != -1)
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return hover;
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index = IndexOfClass(pseudo, ACTIVE);
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if (index != -1)
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return active;
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return normal;
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}
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PRBool
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nsButtonFrameRenderer::isDisabled()
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{
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nsString pseudo = GetPseudoClassAttribute();
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PRInt32 index = IndexOfClass(pseudo, DISABLED);
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if (index != -1)
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return PR_TRUE;
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else
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return PR_FALSE;
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}
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PRBool
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nsButtonFrameRenderer::isFocus()
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{
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nsString pseudo = GetPseudoClassAttribute();
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PRInt32 index = IndexOfClass(pseudo, FOCUS);
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if (index != -1)
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return PR_TRUE;
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else
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return PR_FALSE;
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}
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void
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nsButtonFrameRenderer::ToggleClass(PRBool aValue, const nsString& c, PRBool notify)
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{
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// get the pseudo class
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nsString pseudo = GetPseudoClassAttribute();
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// if focus add it
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if (aValue)
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AddClass(pseudo, c);
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else
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RemoveClass(pseudo, c);
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// set pseudo class
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SetPseudoClassAttribute(pseudo, notify);
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}
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void
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nsButtonFrameRenderer::AddClass(nsString& pseudoclass, const nsString newClass)
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{
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// see if the class is already there
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// if not add it
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PRInt32 index = IndexOfClass(pseudoclass, newClass);
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if (index == -1) {
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pseudoclass += " ";
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pseudoclass += newClass;
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}
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}
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void
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nsButtonFrameRenderer::RemoveClass(nsString& pseudoclass, const nsString newClass)
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{
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// see if the class is there
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// if so remove it
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PRInt32 index = IndexOfClass(pseudoclass, newClass);
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if (index == -1)
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return;
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// remove it
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pseudoclass.Cut(index, newClass.Length());
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}
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PRInt32
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nsButtonFrameRenderer::IndexOfClass(nsString& pseudoclass, const nsString& c)
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{
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// easy first case
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if (pseudoclass.Equals(c))
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return 0;
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// look on left
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PRInt32 index = pseudoclass.Find(nsString(c) + " ");
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if (index == -1 || index > 0) {
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// look on right
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index = pseudoclass.Find(nsString(" ") + c);
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if (index == -1 || index != pseudoclass.Length() - (c.Length()+1))
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{
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// look in center
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index = pseudoclass.Find(nsString(" ") + c + " ");
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if (index == -1)
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return -1;
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else
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index++;
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} else
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index++;
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}
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return index;
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}
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NS_IMETHODIMP
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nsButtonFrameRenderer::HandleEvent(nsIPresContext& aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus& aEventStatus)
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{
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// if disabled do nothing
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if (PR_TRUE == isDisabled()) {
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return NS_OK;
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}
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nsCOMPtr<nsIContent> content;
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mFrame->GetContent(getter_AddRefs(content));
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/* View support has removed because views don't seem to be supporting
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Transpancy and the manager isn't supporting event grabbing either.
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// get its view
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nsIView* view = nsnull;
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GetView(&view);
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nsCOMPtr<nsIViewManager> viewMan;
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view->GetViewManager(*getter_AddRefs(viewMan));
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*/
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aEventStatus = nsEventStatus_eIgnore;
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switch (aEvent->message) {
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case NS_MOUSE_ENTER:
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SetState(hover, PR_TRUE);
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break;
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case NS_MOUSE_LEFT_BUTTON_DOWN:
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SetState(active, PR_TRUE);
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// grab all mouse events
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// PRBool result;
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//viewMan->GrabMouseEvents(view,result);
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break;
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case NS_MOUSE_LEFT_BUTTON_UP:
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SetState(hover, PR_TRUE);
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// stop grabbing mouse events
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//viewMan->GrabMouseEvents(nsnull,result);
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break;
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case NS_MOUSE_EXIT:
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SetState(normal, PR_TRUE);
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break;
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}
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//aEventStatus = nsEventStatus_eConsumeNoDefault;
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return NS_OK;
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}
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/*
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void
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nsButtonFrameRenderer::Redraw()
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{
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nsRect frameRect;
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mFrame->GetRect(frameRect);
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nsRect rect(0, 0, frameRect.width, frameRect.height);
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mFrame->Invalidate(rect, PR_TRUE);
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}
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*/
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void
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nsButtonFrameRenderer::PaintButton (nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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const nsRect& aRect)
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{
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//printf("painted width='%d' height='%d'\n",aRect.width, aRect.height);
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// draw the border and background inside the focus and outline borders
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PaintBorderAndBackground(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer, aRect);
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// draw the focus and outline borders
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PaintOutlineAndFocusBorders(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer, aRect);
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}
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void
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nsButtonFrameRenderer::PaintOutlineAndFocusBorders(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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const nsRect& aRect)
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{
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// once we have all that let draw the focus if we have it. We will need to draw 2 focuses.
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// the inner and the outer. This is so we can do any kind of look and feel some buttons have
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// focus on the outside like mac and motif. While others like windows have it inside (dotted line).
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// Usually only one will be specifed. But I guess you could have both if you wanted to.
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nsRect rect;
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if (eFramePaintLayer_Underlay == aWhichLayer)
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{
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if (mOuterFocusStyle) {
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// ---------- paint the outer focus border -------------
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GetButtonOuterFocusRect(aRect, rect);
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mOuterFocusStyle ->GetStyleData(eStyleStruct_Spacing);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, *spacing, mOuterFocusStyle, 0);
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}
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// ---------- paint the inner focus border -------------
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if (mInnerFocusStyle) {
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GetButtonInnerFocusRect(aRect, rect);
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mInnerFocusStyle ->GetStyleData(eStyleStruct_Spacing);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, *spacing, mInnerFocusStyle, 0);
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}
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}
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if (eFramePaintLayer_Overlay == aWhichLayer)
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{
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if (mOutlineStyle) {
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GetButtonOutlineRect(aRect, rect);
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mOutlineStyle ->GetStyleData(eStyleStruct_Spacing);
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// set the clipping area so we can draw outside our bounds.
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aRenderingContext.PushState();
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PRBool clipEmpty;
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aRenderingContext.SetClipRect(rect, nsClipCombine_kReplace, clipEmpty);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, *spacing, mOutlineStyle, 0);
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aRenderingContext.PopState(clipEmpty);
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}
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}
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}
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void
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nsButtonFrameRenderer::PaintBorderAndBackground(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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const nsRect& aRect)
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{
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if (eFramePaintLayer_Underlay != aWhichLayer)
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return;
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// get the button rect this is inside the focus and outline rects
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nsRect buttonRect;
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GetButtonRect(aRect, buttonRect);
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nsCOMPtr<nsIStyleContext> context;
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mFrame->GetStyleContext(getter_AddRefs(context));
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// get the styles
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const nsStyleSpacing* spacing =
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(const nsStyleSpacing*)context->GetStyleData(eStyleStruct_Spacing);
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const nsStyleColor* color =
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(const nsStyleColor*)context->GetStyleData(eStyleStruct_Color);
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// paint the border and background
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, buttonRect, *color, *spacing, 0, 0);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, buttonRect, *spacing, context, 0);
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}
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void
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nsButtonFrameRenderer::GetButtonOutlineRect(const nsRect& aRect, nsRect& outlineRect)
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{
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outlineRect = aRect;
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outlineRect.Inflate(GetButtonOutlineBorderAndPadding());
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}
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void
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nsButtonFrameRenderer::GetButtonOuterFocusRect(const nsRect& aRect, nsRect& focusRect)
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{
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focusRect = aRect;
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}
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void
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nsButtonFrameRenderer::GetButtonRect(const nsRect& aRect, nsRect& r)
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{
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r = aRect;
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r.Deflate(GetButtonOuterFocusBorderAndPadding());
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}
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void
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nsButtonFrameRenderer::GetButtonInnerFocusRect(const nsRect& aRect, nsRect& focusRect)
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{
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GetButtonRect(aRect, focusRect);
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focusRect.Deflate(GetButtonBorderAndPadding());
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focusRect.Deflate(GetButtonInnerFocusMargin());
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}
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void
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nsButtonFrameRenderer::GetButtonContentRect(const nsRect& aRect, nsRect& r)
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{
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GetButtonInnerFocusRect(aRect, r);
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r.Deflate(GetButtonInnerFocusBorderAndPadding());
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonOuterFocusBorderAndPadding()
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{
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nsMargin focusBorderAndPadding(0,0,0,0);
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if (mOuterFocusStyle) {
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// get the outer focus border and padding
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mOuterFocusStyle ->GetStyleData(eStyleStruct_Spacing);
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spacing->GetBorderPadding(focusBorderAndPadding);
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}
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return focusBorderAndPadding;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonBorderAndPadding()
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{
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nsCOMPtr<nsIStyleContext> context;
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mFrame->GetStyleContext(getter_AddRefs(context));
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nsMargin borderAndPadding(0,0,0,0);
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)context ->GetStyleData(eStyleStruct_Spacing);
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spacing->GetBorderPadding(borderAndPadding);
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return borderAndPadding;
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}
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/**
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* Gets the size of the buttons border this is the union of the normal and disabled borders.
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*/
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nsMargin
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nsButtonFrameRenderer::GetButtonInnerFocusMargin()
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{
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nsMargin innerFocusMargin(0,0,0,0);
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if (mInnerFocusStyle) {
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// get the outer focus border and padding
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mInnerFocusStyle ->GetStyleData(eStyleStruct_Spacing);
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spacing->GetMargin(innerFocusMargin);
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}
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return innerFocusMargin;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonInnerFocusBorderAndPadding()
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{
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nsMargin innerFocusBorderAndPadding(0,0,0,0);
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if (mInnerFocusStyle) {
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// get the outer focus border and padding
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mInnerFocusStyle ->GetStyleData(eStyleStruct_Spacing);
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spacing->GetBorderPadding(innerFocusBorderAndPadding);
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}
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return innerFocusBorderAndPadding;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonOutlineBorderAndPadding()
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{
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nsMargin borderAndPadding(0,0,0,0);
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if (mOutlineStyle) {
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// get the outline border and padding
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const nsStyleSpacing* spacing = (const nsStyleSpacing*)mOutlineStyle ->GetStyleData(eStyleStruct_Spacing);
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spacing->GetBorderPadding(borderAndPadding);
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}
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return borderAndPadding;
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}
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void
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nsButtonFrameRenderer::ReResolveStyles(nsIPresContext& aPresContext)
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{
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// get all the styles
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nsCOMPtr<nsIContent> content;
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mFrame->GetContent(getter_AddRefs(content));
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nsCOMPtr<nsIStyleContext> context;
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mFrame->GetStyleContext(getter_AddRefs(context));
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// style that draw an outline around the button
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nsCOMPtr<nsIAtom> atom (do_QueryInterface(NS_NewAtom(":-moz-outline")));
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aPresContext.ProbePseudoStyleContextFor(content, atom, context,
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PR_FALSE,
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getter_AddRefs(mOutlineStyle));
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// style for the inner such as a dotted line (Windows)
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atom = do_QueryInterface(NS_NewAtom(":-moz-focus-inner"));
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aPresContext.ProbePseudoStyleContextFor(content, atom, context,
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PR_FALSE,
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getter_AddRefs(mInnerFocusStyle));
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// style for outer focus like a ridged border (MAC).
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atom = do_QueryInterface(NS_NewAtom(":-moz-focus-outer"));
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aPresContext.ProbePseudoStyleContextFor(content, atom, context,
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PR_FALSE,
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getter_AddRefs(mOuterFocusStyle));
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}
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void
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nsButtonFrameRenderer::AddFocusBordersAndPadding(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aMetrics,
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nsMargin& aBorderPadding)
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{
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nsHTMLReflowState::ComputeBorderPaddingFor(mFrame,
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aReflowState.parentReflowState,
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aBorderPadding);
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aBorderPadding += GetButtonOuterFocusBorderAndPadding();
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aBorderPadding += GetButtonInnerFocusMargin();
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aBorderPadding += GetButtonInnerFocusBorderAndPadding();
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aMetrics.width += aBorderPadding.left + aBorderPadding.right;
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aMetrics.height += aBorderPadding.top + aBorderPadding.bottom;
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aMetrics.ascent = aMetrics.height;
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aMetrics.descent = 0;
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// printf("requested width='%d' height='%d'\n",aMetrics.width, aMetrics.height);
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}
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|