зеркало из https://github.com/mozilla/gecko-dev.git
526 строки
13 KiB
C++
526 строки
13 KiB
C++
/* -*- 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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//
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// CScrollerWithArrows
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// Mike Pinkerton, Netscape Communications
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//
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// See header file for class descriptions.
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//
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// NOTES:
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// - does not yet autoscroll when doing drag and drop
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// - icons for horizontal orientation are incorrect, but we don't have any better ones
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// in the app so I just put the vertical ones in as place holders.
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// - has only been tested in vertical orientation
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// - has only been tested with all indents set to 0
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//
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#include "CScrollerWithArrows.h"
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#include <LStdControl.h>
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#include <PP_Types.h>
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#include <UGAColorRamp.h>
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#pragma mark -- class CScrollArrowControl
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//
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// CScrollerWithArrows
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//
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// Default contsructor
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//
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CScrollerWithArrows::CScrollerWithArrows()
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{
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mScrollingView = nil;
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mScrollingViewID = -1;
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mUpLeftArrow = nil;
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mDownRightArrow = nil;
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mIsVertical = false;
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}
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//
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// CScrollerWithArrows
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//
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// Stream Constructor
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//
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CScrollerWithArrows::CScrollerWithArrows(
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LStream *inStream)
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: LView(inStream)
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{
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SScrollerArrowInfo scrollerInfo;
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inStream->ReadData(&scrollerInfo, sizeof(SScrollerArrowInfo));
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// ScrollingView has not yet been created, since SuperViews are
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// created before their subviews when building Panes from a Stream.
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// Therefore, we store the ID of the ScrollingView so that the
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// FinishCreateSelf function can set up the proper connections.
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mScrollingViewID = scrollerInfo.scrollingViewID;
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mScrollingView = nil;
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mUpLeftArrow = nil;
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mDownRightArrow = nil;
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// Determine orientation of scrolling. I guess I could just make this
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// a flag in constructor....
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if ( mFrameSize.height > mFrameSize.width )
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mIsVertical = true;
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try {
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MakeScrollArrows(scrollerInfo.leftIndent, scrollerInfo.rightIndent,
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scrollerInfo.topIndent, scrollerInfo.bottomIndent);
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}
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catch (...) { // Failed to fully build scroll arrows
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delete mUpLeftArrow;
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delete mDownRightArrow;
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throw;
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}
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} // CScrollerWithArrows stream constructor
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//
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// ~CScrollerWithArrows
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//
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CScrollerWithArrows::~CScrollerWithArrows()
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{
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// view subsystem will dispose of scroll arrows because they are children
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}
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//
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// MakeScrollArrows
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//
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// Create the arrow control objects in the view, indented accordingly to fit the
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// needs of the subview. In contrast to how LScroller works, the indents apply to
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// both scrollers.
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//
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void
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CScrollerWithArrows::MakeScrollArrows(
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Int16 inLeftIndent,
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Int16 inRightIndent,
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Int16 inTopIndent,
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Int16 inBottomIndent)
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{
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SPaneInfo arrowInfo; // Common information for scroll arrows
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arrowInfo.visible = false; // arrows aren't visible until
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arrowInfo.enabled = true; // scroller is activated
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arrowInfo.userCon = 0;
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arrowInfo.superView = this;
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arrowInfo.paneID = 0;
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if ( IsVertical() ) {
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arrowInfo.bindings.left = true;
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arrowInfo.bindings.right = true;
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arrowInfo.width = mFrameSize.width - inLeftIndent - inRightIndent;
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arrowInfo.height = 16;
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arrowInfo.left = inLeftIndent;
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// create the top vertical arrow
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arrowInfo.top = inTopIndent;
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arrowInfo.bindings.bottom = false;
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mUpLeftArrow = MakeOneScrollArrow ( arrowInfo, kUpLeft );
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mUpLeftArrow->AddListener(this);
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// create the bottom vertical arrow
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arrowInfo.top = mFrameSize.height - inBottomIndent - arrowInfo.height;
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arrowInfo.bindings.top = false;
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arrowInfo.bindings.bottom = true;
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mDownRightArrow = MakeOneScrollArrow ( arrowInfo, kDownRight );
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mDownRightArrow->AddListener(this);
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} // if view orientation is vertical
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else {
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arrowInfo.bindings.top = true;
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arrowInfo.bindings.bottom = true;
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arrowInfo.width = 16;
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arrowInfo.height = mFrameSize.height - inTopIndent - inBottomIndent;
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arrowInfo.top = inTopIndent;
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// create the left horizontal arrow
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arrowInfo.left = inLeftIndent;
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arrowInfo.bindings.right = false;
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mUpLeftArrow = MakeOneScrollArrow ( arrowInfo, kUpLeft );
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mUpLeftArrow->AddListener(this);
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// create the right horizontal arrow
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arrowInfo.left = mFrameSize.width - inRightIndent - arrowInfo.width;
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arrowInfo.bindings.left = false;
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arrowInfo.bindings.right = true;
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mDownRightArrow = MakeOneScrollArrow ( arrowInfo, kDownRight );
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mDownRightArrow->AddListener(this);
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} // else view orientation is horizontal
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SetDefaultAttachable(this); // Reset so Attachments don't get
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// attached to the ScrollBars
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} // MakeScrollArrows
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//
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// MakeOneScrollArrow
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//
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// Creates a scroll arrow in the given direction.
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//
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LControl*
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CScrollerWithArrows :: MakeOneScrollArrow ( const SPaneInfo &inPaneInfo,
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ScrollDir inScrollWhichWay )
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{
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ResIDT iconID = 0;
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SControlInfo controlInfo;
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controlInfo.value = 0;
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controlInfo.minValue = 0;
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controlInfo.maxValue = 0;
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if ( inScrollWhichWay == kUpLeft ) {
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controlInfo.valueMessage = kControlUpButtonPart;
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iconID = IsVertical() ? CScrollArrowControl::kIconUp : CScrollArrowControl::kIconLeft;
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}
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else {
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controlInfo.valueMessage = kControlDownButtonPart;
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iconID = IsVertical() ? CScrollArrowControl::kIconDown : CScrollArrowControl::kIconRight;
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}
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return new CScrollArrowControl ( inPaneInfo, controlInfo, iconID );
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} // MakeOneScrollArrow
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//
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// FinishCreateSelf
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//
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// Finish creation of the scroller by installing its scrolling subview.
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//
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void
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CScrollerWithArrows::FinishCreateSelf()
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{
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LView* scrollingView = dynamic_cast<LView*>(FindPaneByID(mScrollingViewID));
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if (scrollingView != nil) {
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GrafPtr myPort = GetMacPort();
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if (myPort == nil)
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myPort = UQDGlobals::GetCurrentPort();
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StVisRgn suppressDrawing(myPort);
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InstallView(scrollingView);
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}
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} // FinishCreateSelf
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//
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// ActivateSelf
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//
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// Show arrows that were hidden when app was deactivated
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//
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void
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CScrollerWithArrows::ActivateSelf()
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{
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if ( mUpLeftArrow )
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mUpLeftArrow->Show();
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if ( mDownRightArrow )
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mDownRightArrow->Show();
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} // ActivateSelf
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//
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// DeactivateSelf
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//
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// According to Mac Human Interface Guidelines, ScrollBars in inactive
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// windows are hidden. We follow this by hiding the scroll arrows.
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//
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void
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CScrollerWithArrows::DeactivateSelf()
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{
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if ( mUpLeftArrow && mUpLeftArrow->IsVisible() ) {
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mUpLeftArrow->Hide();
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mUpLeftArrow->DontRefresh(true);
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}
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if ( mDownRightArrow && mDownRightArrow->IsVisible() ) {
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mDownRightArrow->Hide();
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mDownRightArrow->DontRefresh(true);
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}
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if ( FocusExposed() ) { // Redraw now!
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Rect frame;
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CalcLocalFrameRect(frame);
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if (ExecuteAttachments(msg_DrawOrPrint, &frame)) {
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DrawSelf();
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}
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}
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} // DeactivateSelf
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//
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// InstallView
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//
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// Install a Scrolling View within this Scroller
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//
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void
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CScrollerWithArrows::InstallView ( LView *inScrollingView )
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{
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mScrollingView = inScrollingView;
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AdjustScrollArrows();
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} // InstallView
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//
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// ExpandSubPane
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//
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// Expand a SubPane, which should be the Scroller's ScrollingView, to
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// fill the interior of a Scroller
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//
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void
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CScrollerWithArrows::ExpandSubPane ( LPane *inSub, Boolean inExpandHoriz,
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Boolean inExpandVert )
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{
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SDimension16 subSize;
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inSub->GetFrameSize(subSize);
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SPoint32 subLocation;
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inSub->GetFrameLocation(subLocation);
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if (inExpandHoriz) {
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subSize.width = mFrameSize.width - 2;
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if ( !IsVertical() )
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subSize.width -= 2 * 15; // account for 2 scroll arrows
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subLocation.h = 1;
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} else
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subLocation.h -= mFrameLocation.h;
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if (inExpandVert) {
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subSize.height = mFrameSize.height - 2;
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if ( IsVertical() )
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subSize.height -= 2 * 15; // account for 2 scroll arrows
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subLocation.v = 1;
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} else
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subLocation.v -= mFrameLocation.v;
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inSub->PlaceInSuperFrameAt(subLocation.h, subLocation.v, false);
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inSub->ResizeFrameTo(subSize.width, subSize.height, false);
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} // ExpandSubPane
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//
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// AdjustScrollArrows
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//
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// Adjust the arrows (value, min, and max) according to the current
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// state of the Scroller and ScrollingView
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//
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void
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CScrollerWithArrows::AdjustScrollArrows()
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{
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// nothing to scroll, bail out after disabling scrollarrows.
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if ( !mScrollingView ) {
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if ( mUpLeftArrow )
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mUpLeftArrow->SetValue(0);
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if ( mDownRightArrow )
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mDownRightArrow->SetMinValue(0);
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return;
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}
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SPoint32 scrollUnit;
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SDimension16 scrollFrameSize;
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SDimension32 scrollImageSize;
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SPoint32 scrollPosition;
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mScrollingView->GetScrollUnit(scrollUnit);
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mScrollingView->GetFrameSize(scrollFrameSize);
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mScrollingView->GetImageSize(scrollImageSize);
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mScrollingView->GetScrollPosition(scrollPosition);
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bool enable = false;
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if ( IsVertical() ) {
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Int32 vertDiff = scrollImageSize.height - scrollFrameSize.height;
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if (scrollPosition.v > vertDiff)
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vertDiff = scrollPosition.v;
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// if there is a reason to scroll, then enable the scroll arrows
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if (vertDiff > 0)
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enable = true;
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}
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else {
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Int32 horizDiff = scrollImageSize.width - scrollFrameSize.width;
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if (scrollPosition.h > horizDiff)
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horizDiff = scrollPosition.h;
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// if there is a reason to scroll, then enable the scroll arrows
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if (horizDiff > 0)
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enable = true;
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}
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if ( enable ) {
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mUpLeftArrow->Enable();
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mDownRightArrow->Enable();
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}
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else {
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mUpLeftArrow->Disable();
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mDownRightArrow->Disable();
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}
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} // AdjustScrollArrows
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//
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// ResizeFrameBy
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//
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// Adjust the framesize by the given ammounts and adjust the scroll arrows to reflect
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// the new sizes.
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//
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void
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CScrollerWithArrows::ResizeFrameBy( Int16 inWidthDelta, Int16 inHeightDelta, Boolean inRefresh )
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{
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// Let LView do all the work. All Scroller has to do is
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// adjust the ScrollBars to account for the new size
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// of the Scroller and resize its Image so it matches
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// its Frame size.
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LView::ResizeFrameBy(inWidthDelta, inHeightDelta, inRefresh);
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{
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// Prevent scroll bars from drawing while adjusting them
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StVisRgn suppressDrawing(GetMacPort());
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AdjustScrollArrows();
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}
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ResizeImageBy(inWidthDelta, inHeightDelta, false);
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} // ResizeFrameBy
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//
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// SubImageChanged
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//
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// arrow settings depend on the ScrollingView Image, so adjust them
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// to match the current state.
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//
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void
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CScrollerWithArrows::SubImageChanged ( LView *inSubView )
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{
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if (inSubView == mScrollingView)
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AdjustScrollArrows();
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} // SubImageChanged
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//
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// ListenToMessage
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//
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// Unlike LScroller which just listens for the thumb changing message, this scroller
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// uses messages for all aspects of scrolling (of course, there is no such thing as
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// a thumb in this case).
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//
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void
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CScrollerWithArrows::ListenToMessage( MessageT inMessage, void *ioParam)
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{
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Int32 scrollUnits = 0;
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switch ( inMessage ) {
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case kControlUpButtonPart: // Scroll up/left one unit
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scrollUnits = -1;
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break;
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case kControlDownButtonPart: // Scroll down/right one unit
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scrollUnits = 1;
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break;
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} // case of which button clicked
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if ( scrollUnits ) {
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SPoint32 scrollUnit;
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Int32 scrollBy;
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mScrollingView->GetScrollUnit(scrollUnit);
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scrollBy = scrollUnits * (IsVertical() ? scrollUnit.v : scrollUnit.h);
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mScrollingView->ScrollPinnedImageBy(0, scrollBy, true);
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}
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} // ListenToMessage
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//----------------------------------------------------------------------------------
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//----------------------------------------------------------------------------------
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#pragma mark -- class CScrollArrowControl
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CScrollArrowControl :: CScrollArrowControl ( const SPaneInfo &inPaneInfo,
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const SControlInfo &inControlInfo,
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ResIDT inIconResID )
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: LGAIconButton ( inPaneInfo, inControlInfo, controlMode_Button, inIconResID,
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sizeSelector_SmallIconSize, iconPosition_Center )
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{
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// nothing else needed
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}
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CScrollArrowControl :: CScrollArrowControl ( LStream* inStream )
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:LGAIconButton(inStream)
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{
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// nothing else needed
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}
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//
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// HotSpotAction
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//
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// Do the normal hot-spot stuff, but also send the message that the click is still going on,
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// which effectively does auto-scroll. It is a bit too fast for my taste, but it works.
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//
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void
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CScrollArrowControl :: HotSpotAction ( Int16 inHotSpot, Boolean inCurrInside, Boolean inPrevInside )
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{
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LGAIconButton::HotSpotAction ( inHotSpot, inCurrInside, inPrevInside );
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if ( inCurrInside )
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BroadcastValueMessage();
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} // HotSpotAction
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//
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// DrawSelf
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//
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// While the cursor tracking, etc of LGAIconButton is great, we don't want a border around
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// the scroll triangle (it just looks bad). Only paint the background and draw the icon
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//
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void
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CScrollArrowControl :: DrawSelf ( )
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{
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StColorPenState::Normalize ();
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// Get the frame for the control and paint it
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Rect localFrame;
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CalcLocalFrameRect ( localFrame );
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localFrame.right--;
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::RGBForeColor ( &UGAColorRamp::GetColor(2));
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::PaintRect ( &localFrame );
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DrawIcon();
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} // DrawSelf
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