404 lines
11 KiB
C++
404 lines
11 KiB
C++
/*
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* Dillo Widget
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*
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* Copyright 2013-2014 Sebastian Geerken <sgeerken@dillo.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "oofpositionedmgr.hh"
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#include "../lout/debug.hh"
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using namespace lout::object;
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using namespace lout::container::typed;
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using namespace lout::misc;
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using namespace dw::core;
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using namespace dw::core::style;
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namespace dw {
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namespace oof {
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OOFPositionedMgr::Child::Child (core::Widget *widget, OOFAwareWidget *generator,
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int externalIndex)
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{
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this->widget = widget;
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this->generator = generator;
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this->externalIndex = externalIndex;
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x = y = 0;
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// Initially, this child does not actually have been considered,
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// but since adding a new element will force a size/extremes
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// calculation, this is equivalent.
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consideredForSize = consideredForExtremes = true;
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}
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OOFPositionedMgr::OOFPositionedMgr (OOFAwareWidget *container)
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{
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DBG_OBJ_CREATE ("dw::oof::OOFPositionedMgr");
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this->container = container;
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childrenByWidget = new HashTable<TypedPointer<Widget>, Child> (true, true);
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if(container->wasAllocated()) {
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containerAllocationState = WAS_ALLOCATED;
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containerAllocation = *(container->getAllocation());
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} else {
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containerAllocationState = NOT_ALLOCATED;
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containerAllocation.x = -1;
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containerAllocation.y = -1;
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containerAllocation.width = 1;
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containerAllocation.ascent = 1;
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containerAllocation.descent = 0;
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}
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DBG_OBJ_SET_NUM ("children.size", children->size());
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}
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OOFPositionedMgr::~OOFPositionedMgr ()
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{
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delete childrenByWidget;
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DBG_OBJ_DELETE ();
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}
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void OOFPositionedMgr::sizeAllocateStart (OOFAwareWidget *caller,
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Allocation *allocation)
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{
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DBG_OBJ_ENTER ("resize.oofm", 0, "sizeAllocateStart",
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"%p, (%d, %d, %d * (%d + %d))",
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caller, allocation->x, allocation->y, allocation->width,
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allocation->ascent, allocation->descent);
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if (caller == container) {
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if (containerAllocationState == NOT_ALLOCATED)
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containerAllocationState = IN_ALLOCATION;
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containerAllocation = *allocation;
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}
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DBG_OBJ_LEAVE ();
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}
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void OOFPositionedMgr::sizeAllocateEnd (OOFAwareWidget *caller)
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{
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DBG_OBJ_ENTER ("resize.oofm", 0, "sizeAllocateEnd", "%p", caller);
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if (caller == container) {
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sizeAllocateChildren ();
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bool extremesChanged = !allChildrenConsideredForExtremes ();
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if (extremesChanged || doChildrenExceedContainer () ||
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!allChildrenConsideredForSize ())
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container->oofSizeChanged (extremesChanged);
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containerAllocationState = WAS_ALLOCATED;
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}
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DBG_OBJ_LEAVE ();
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}
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bool OOFPositionedMgr::doChildrenExceedContainer ()
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{
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DBG_OBJ_ENTER0 ("resize.oofm", 0, "doChildrenExceedContainer");
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// This method is called to determine whether the *requisition* of
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// the container must be recalculated. So, we check the allocations
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// of the children against the *requisition* of the container,
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// which may (e. g. within tables) differ from the new allocation.
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// (Generally, a widget may allocated at a different size.)
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Requisition containerReq;
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container->sizeRequest (&containerReq);
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bool exceeds = false;
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DBG_OBJ_MSG_START ();
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for (int i = 0; i < children.size () && !exceeds; i++) {
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Child *child = children.at (i);
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Allocation *childAlloc = child->widget->getAllocation ();
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DBG_OBJ_MSGF ("resize.oofm", 2,
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"Does childAlloc = (%d, %d, %d * %d) exceed container "
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"alloc+req = (%d, %d, %d * %d)?",
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childAlloc->x, childAlloc->y, childAlloc->width,
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childAlloc->ascent + childAlloc->descent,
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containerAllocation.x, containerAllocation.y,
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containerReq.width,
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containerReq.ascent + containerReq.descent);
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if (childAlloc->x + childAlloc->width
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> containerAllocation.x + containerReq.width ||
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childAlloc->y + childAlloc->ascent + childAlloc->descent
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> containerAllocation.y +
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containerReq.ascent + containerReq.descent) {
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exceeds = true;
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DBG_OBJ_MSG ("resize.oofm", 2, "Yes.");
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} else
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DBG_OBJ_MSG ("resize.oofm", 2, "No.");
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}
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DBG_OBJ_MSG_END ();
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DBG_OBJ_MSGF ("resize.oofm", 1, "=> %s", exceeds ? "true" : "false");
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DBG_OBJ_LEAVE ();
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return exceeds;
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}
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void OOFPositionedMgr::containerSizeChangedForChildren ()
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{
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DBG_OBJ_ENTER0 ("resize", 0, "containerSizeChangedForChildren");
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for (int i = 0; i < children.size(); i++)
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children.at(i)->widget->containerSizeChanged ();
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DBG_OBJ_LEAVE ();
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}
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void OOFPositionedMgr::draw (View *view, Rectangle *area,
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DrawingContext *context)
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{
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DBG_OBJ_ENTER ("draw", 0, "draw", "%d, %d, %d * %d",
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area->x, area->y, area->width, area->height);
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for (int i = 0; i < children.size(); i++) {
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Child *child = children.at(i);
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Rectangle childArea;
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if (!context->hasWidgetBeenProcessedAsInterruption (child->widget) &&
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!StackingContextMgr::handledByStackingContextMgr (child->widget) &&
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child->widget->intersects (container, area, &childArea))
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child->widget->draw (view, &childArea, context);
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}
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DBG_OBJ_LEAVE ();
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}
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void OOFPositionedMgr::addWidgetInFlow (OOFAwareWidget *widget,
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OOFAwareWidget *parent,
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int externalIndex)
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{
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}
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int OOFPositionedMgr::addWidgetOOF (Widget *widget, OOFAwareWidget *generator,
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int externalIndex)
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{
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DBG_OBJ_ENTER ("construct.oofm", 0, "addWidgetOOF", "%p, %p, %d",
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widget, generator, externalIndex);
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Child *child = new Child (widget, generator, externalIndex);
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children.push_back( child );
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childrenByWidget->put (new TypedPointer<Widget> (widget), child);
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int subRef = children.size() - 1;
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DBG_OBJ_SET_NUM ("children.size", children.size());
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DBG_OBJ_ARRSET_PTR ("children", children.size() - 1, widget);
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DBG_OBJ_SET_PTR_O (widget, "<Positioned>.generator", generator);
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DBG_OBJ_SET_NUM_O (widget, "<Positioned>.externalIndex", externalIndex);
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DBG_OBJ_MSGF ("construct.oofm", 1, "=> %d", subRef);
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DBG_OBJ_LEAVE ();
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return subRef;
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}
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void OOFPositionedMgr::moveExternalIndices (OOFAwareWidget *generator,
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int oldStartIndex, int diff)
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{
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for (int i = 0; i < children.size (); i++) {
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Child *child = children.at (i);
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if (child->externalIndex >= oldStartIndex) {
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child->externalIndex += diff;
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DBG_OBJ_SET_NUM_O (child->widget, "<Positioned>.externalIndex",
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child->externalIndex);
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}
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}
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}
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void OOFPositionedMgr::markSizeChange (int ref)
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{
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}
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void OOFPositionedMgr::markExtremesChange (int ref)
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{
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}
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Widget *OOFPositionedMgr::getWidgetAtPoint (int x, int y,
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GettingWidgetAtPointContext
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*context)
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{
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DBG_OBJ_ENTER ("events", 0, "getWidgetAtPoint", "%d, %d", x, y);
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Widget *widgetAtPoint = NULL;
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for (int i = children.size() - 1; widgetAtPoint == NULL && i >= 0; i--) {
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Widget *childWidget = children.at(i)->widget;
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if (!context->hasWidgetBeenProcessedAsInterruption (childWidget) &&
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!StackingContextMgr::handledByStackingContextMgr (childWidget))
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widgetAtPoint = childWidget->getWidgetAtPoint (x, y, context);
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}
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DBG_OBJ_MSGF ("events", 0, "=> %p", widgetAtPoint);
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DBG_OBJ_LEAVE ();
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return widgetAtPoint;
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}
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void OOFPositionedMgr::tellPosition1 (Widget *widget, int x, int y)
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{
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}
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void OOFPositionedMgr::tellPosition2 (Widget *widget, int x, int y)
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{
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DBG_OBJ_ENTER ("resize.oofm", 0, "tellPosition2", "%p, %d, %d",
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widget, x, y);
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TypedPointer<Widget> key (widget);
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Child *child = childrenByWidget->get (&key);
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assert (child);
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child->x = x;
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child->y = y;
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DBG_OBJ_SET_NUM_O (child->widget, "<Positioned>.x", x);
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DBG_OBJ_SET_NUM_O (child->widget, "<Positioned>.y", y);
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DBG_OBJ_LEAVE ();
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}
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void OOFPositionedMgr::tellIncompletePosition1 (Widget *generator,
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Widget *widget, int x, int y)
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{
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// Nothing to do.
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}
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void OOFPositionedMgr::tellIncompletePosition2 (Widget *generator,
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Widget *widget, int x, int y)
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{
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// TODO
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}
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bool OOFPositionedMgr::containerMustAdjustExtraSpace ()
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{
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return true;
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}
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int OOFPositionedMgr::getLeftBorder (int y, int h, OOFAwareWidget *lastGen,
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int lastExtIndex)
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{
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return 0;
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}
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int OOFPositionedMgr::getRightBorder (int y, int h, OOFAwareWidget *lastGen,
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int lastExtIndex)
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{
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return 0;
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}
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bool OOFPositionedMgr::hasFloatLeft (int y, int h, OOFAwareWidget *lastGen,
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int lastExtIndex)
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{
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return false;
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}
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bool OOFPositionedMgr::hasFloatRight (int y, int h, OOFAwareWidget *lastGen,
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int lastExtIndex)
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{
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return false;
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}
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int OOFPositionedMgr::getLeftFloatHeight (int y, int h, OOFAwareWidget *lastGen,
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int lastExtIndex)
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{
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return 0;
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}
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int OOFPositionedMgr::getRightFloatHeight (int y, int h,
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OOFAwareWidget *lastGen,
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int lastExtIndex)
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{
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return 0;
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}
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int OOFPositionedMgr::getClearPosition (OOFAwareWidget *widget)
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{
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return 0;
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}
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bool OOFPositionedMgr::affectsLeftBorder (Widget *widget)
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{
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return false;
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}
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bool OOFPositionedMgr::affectsRightBorder (Widget *widget)
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{
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return false;
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}
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bool OOFPositionedMgr::mayAffectBordersAtAll ()
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{
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return false;
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}
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bool OOFPositionedMgr::dealingWithSizeOfChild (Widget *child)
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{
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return true;
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}
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int OOFPositionedMgr::getNumWidgets ()
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{
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return children.size();
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}
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Widget *OOFPositionedMgr::getWidget (int i)
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{
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return children.at(i)->widget;
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}
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bool OOFPositionedMgr::getPosBorder (style::Length cssValue, int refLength,
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int *result)
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{
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if (style::isAbsLength (cssValue)) {
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*result = style::absLengthVal (cssValue);
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return true;
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} else if (style::isPerLength (cssValue)) {
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*result = style::multiplyWithPerLength (refLength, cssValue);
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return true;
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} else
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// "false" means "undefined":
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return false;
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}
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bool OOFPositionedMgr::allChildrenConsideredForSize ()
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{
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for (int i = 0; i < children.size(); i++)
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if (!children.at(i)->consideredForSize)
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return false;
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return true;
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}
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bool OOFPositionedMgr::allChildrenConsideredForExtremes ()
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{
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for (int i = 0; i < children.size(); i++)
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if (!children.at(i)->consideredForExtremes)
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return false;
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return true;
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}
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} // namespace oof
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} // namespace dw
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