| /** |
| * This file is part of the KDE project. |
| * |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 2000 Simon Hausmann <hausmann@kde.org> |
| * (C) 2000 Stefan Schimanski (1Stein@gmx.de) |
| * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| * |
| */ |
| #include "config.h" |
| #include "RenderFrameSet.h" |
| |
| #include "Cursor.h" |
| #include "EventNames.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "HTMLFrameSetElement.h" |
| #include "HTMLNames.h" |
| #include "TextStream.h" |
| #include "MouseEvent.h" |
| #include "RenderFrame.h" |
| #include "RenderView.h" |
| |
| namespace WebCore { |
| |
| using namespace EventNames; |
| using namespace HTMLNames; |
| |
| RenderFrameSet::RenderFrameSet(HTMLFrameSetElement* frameSet) |
| : RenderContainer(frameSet) |
| , m_hSplitVar(0) |
| , m_vSplitVar(0) |
| , m_hSplit(-1) |
| , m_vSplit(-1) |
| , m_resizing(false) |
| , m_clientResizing(false) |
| { |
| // init RenderObject attributes |
| setInline(false); |
| |
| for (int k = 0; k < 2; ++k) { |
| m_gridLen[k] = -1; |
| m_gridDelta[k] = 0; |
| m_gridLayout[k] = 0; |
| } |
| } |
| |
| RenderFrameSet::~RenderFrameSet() |
| { |
| for (int k = 0; k < 2; ++k) { |
| if (m_gridLayout[k]) |
| delete [] m_gridLayout[k]; |
| if (m_gridDelta[k]) |
| delete [] m_gridDelta[k]; |
| } |
| if (m_hSplitVar) |
| delete [] m_hSplitVar; |
| if (m_vSplitVar) |
| delete [] m_vSplitVar; |
| } |
| |
| bool RenderFrameSet::nodeAtPoint(NodeInfo& info, int _x, int _y, int _tx, int _ty, |
| HitTestAction hitTestAction) |
| { |
| if (hitTestAction != HitTestForeground) |
| return false; |
| |
| bool inside = RenderContainer::nodeAtPoint(info, _x, _y, _tx, _ty, hitTestAction) || |
| m_resizing || canResize(_x, _y); |
| if (inside && element() && !element()->noResize() && !info.readonly() && !info.innerNode()) { |
| info.setInnerNode(element()); |
| info.setInnerNonSharedNode(element()); |
| } |
| |
| return inside || m_clientResizing; |
| } |
| |
| void RenderFrameSet::layout() |
| { |
| ASSERT(needsLayout()); |
| ASSERT(minMaxKnown()); |
| |
| if (!parent()->isFrameSet()) { |
| FrameView* v = view()->frameView(); |
| m_width = v->visibleWidth(); |
| m_height = v->visibleHeight(); |
| } |
| |
| int remainingLen[2]; |
| remainingLen[1] = m_width - (element()->totalCols()-1)*element()->border(); |
| if (remainingLen[1] < 0) |
| remainingLen[1] = 0; |
| remainingLen[0] = m_height - (element()->totalRows()-1)*element()->border(); |
| if (remainingLen[0] < 0) |
| remainingLen[0] = 0; |
| |
| int availableLen[2]; |
| availableLen[0] = remainingLen[0]; |
| availableLen[1] = remainingLen[1]; |
| |
| if (m_gridLen[0] != element()->totalRows() || m_gridLen[1] != element()->totalCols()) { |
| // number of rows or cols changed |
| // need to zero out the deltas |
| m_gridLen[0] = element()->totalRows(); |
| m_gridLen[1] = element()->totalCols(); |
| for (int k = 0; k < 2; ++k) { |
| if (m_gridDelta[k]) delete [] m_gridDelta[k]; |
| m_gridDelta[k] = new int[m_gridLen[k]]; |
| if (m_gridLayout[k]) delete [] m_gridLayout[k]; |
| m_gridLayout[k] = new int[m_gridLen[k]]; |
| for (int i = 0; i < m_gridLen[k]; ++i) |
| m_gridDelta[k][i] = 0; |
| } |
| } |
| |
| for (int k = 0; k < 2; ++k) { |
| int totalRelative = 0; |
| int totalFixed = 0; |
| int totalPercent = 0; |
| int countRelative = 0; |
| int countFixed = 0; |
| int countPercent = 0; |
| int gridLen = m_gridLen[k]; |
| int* gridDelta = m_gridDelta[k]; |
| Length* grid = k ? element()->m_cols : element()->m_rows; |
| int* gridLayout = m_gridLayout[k]; |
| |
| if (grid) { |
| assert(gridLen); |
| // First we need to investigate how many columns of each type we have and |
| // how much space these columns are going to require. |
| for (int i = 0; i < gridLen; ++i) { |
| // Count the total length of all of the fixed columns/rows -> totalFixed |
| // Count the number of columns/rows which are fixed -> countFixed |
| if (grid[i].isFixed()) { |
| gridLayout[i] = max(grid[i].value(), 0); |
| totalFixed += gridLayout[i]; |
| countFixed++; |
| } |
| |
| // Count the total percentage of all of the percentage columns/rows -> totalPercent |
| // Count the number of columns/rows which are percentages -> countPercent |
| if (grid[i].isPercent()) { |
| gridLayout[i] = max(grid[i].calcValue(availableLen[k]), 0); |
| totalPercent += gridLayout[i]; |
| countPercent++; |
| } |
| |
| // Count the total relative of all the relative columns/rows -> totalRelative |
| // Count the number of columns/rows which are relative -> countRelative |
| if (grid[i].isRelative()) { |
| totalRelative += max(grid[i].value(), 1); |
| countRelative++; |
| } |
| } |
| |
| // Fixed columns/rows are our first priority. If there is not enough space to fit all fixed |
| // columns/rows we need to proportionally adjust their size. |
| if (totalFixed > remainingLen[k]) { |
| int remainingFixed = remainingLen[k]; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isFixed()) { |
| gridLayout[i] = (gridLayout[i] * remainingFixed) / totalFixed; |
| remainingLen[k] -= gridLayout[i]; |
| } |
| } |
| } else |
| remainingLen[k] -= totalFixed; |
| |
| // Percentage columns/rows are our second priority. Divide the remaining space proportionally |
| // over all percentage columns/rows. IMPORTANT: the size of each column/row is not relative |
| // to 100%, but to the total percentage. For example, if there are three columns, each of 75%, |
| // and the available space is 300px, each column will become 100px in width. |
| if (totalPercent > remainingLen[k]) { |
| int remainingPercent = remainingLen[k]; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isPercent()) { |
| gridLayout[i] = (gridLayout[i] * remainingPercent) / totalPercent; |
| remainingLen[k] -= gridLayout[i]; |
| } |
| } |
| } else |
| remainingLen[k] -= totalPercent; |
| |
| // Relative columns/rows are our last priority. Divide the remaining space proportionally |
| // over all relative columns/rows. IMPORTANT: the relative value of 0* is treated as 1*. |
| if (countRelative) { |
| int lastRelative = 0; |
| int remainingRelative = remainingLen[k]; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isRelative()) { |
| gridLayout[i] = (max(grid[i].value(), 1) * remainingRelative) / totalRelative; |
| remainingLen[k] -= gridLayout[i]; |
| lastRelative = i; |
| } |
| } |
| |
| // If we could not evently distribute the available space of all of the relative |
| // columns/rows, the remainder will be added to the last column/row. |
| // For example: if we have a space of 100px and three columns (*,*,*), the remainder will |
| // be 1px and will be added to the last column: 33px, 33px, 34px. |
| if (remainingLen[k]) { |
| gridLayout[lastRelative] += remainingLen[k]; |
| remainingLen[k] = 0; |
| } |
| } |
| |
| // If we still have some left over space we need to divide it over the already existing |
| // columns/rows |
| if (remainingLen[k]) { |
| // Our first priority is to spread if over the percentage columns. The remaining |
| // space is spread evenly, for example: if we have a space of 100px, the columns |
| // definition of 25%,25% used to result in two columns of 25px. After this the |
| // columns will each be 50px in width. |
| if (countPercent && totalPercent) { |
| int remainingPercent = remainingLen[k]; |
| int changePercent = 0; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isPercent()) { |
| changePercent = (remainingPercent * gridLayout[i]) / totalPercent; |
| gridLayout[i] += changePercent; |
| remainingLen[k] -= changePercent; |
| } |
| } |
| } else if (totalFixed) { |
| // Our last priority is to spread the remaining space over the fixed columns. |
| // For example if we have 100px of space and two column of each 40px, both |
| // columns will become exactly 50px. |
| int remainingFixed = remainingLen[k]; |
| int changeFixed = 0; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isFixed()) { |
| changeFixed = (remainingFixed * gridLayout[i]) / totalFixed; |
| gridLayout[i] += changeFixed; |
| remainingLen[k] -= changeFixed; |
| } |
| } |
| } |
| } |
| |
| // If we still have some left over space we probably ended up with a remainder of |
| // a division. We can not spread it evenly anymore. If we have any percentage |
| // columns/rows simply spread the remainder equally over all available percentage columns, |
| // regardless of their size. |
| if (remainingLen[k] && countPercent) { |
| int remainingPercent = remainingLen[k]; |
| int changePercent = 0; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isPercent()) { |
| changePercent = remainingPercent / countPercent; |
| gridLayout[i] += changePercent; |
| remainingLen[k] -= changePercent; |
| } |
| } |
| } |
| |
| // If we don't have any percentage columns/rows we only have fixed columns. Spread |
| // the remainder equally over all fixed columns/rows. |
| else if (remainingLen[k] && countFixed) { |
| int remainingFixed = remainingLen[k]; |
| int changeFixed = 0; |
| |
| for (int i = 0; i < gridLen; ++i) { |
| if (grid[i].isFixed()) { |
| changeFixed = remainingFixed / countFixed; |
| gridLayout[i] += changeFixed; |
| remainingLen[k] -= changeFixed; |
| } |
| } |
| } |
| |
| // Still some left over... simply add it to the last column, because it is impossible |
| // spread it evenly or equally. |
| if (remainingLen[k]) |
| gridLayout[gridLen - 1] += remainingLen[k]; |
| |
| // now we have the final layout, distribute the delta over it |
| bool worked = true; |
| for (int i = 0; i < gridLen; ++i) { |
| if (gridLayout[i] && gridLayout[i] + gridDelta[i] <= 0) |
| worked = false; |
| gridLayout[i] += gridDelta[i]; |
| } |
| // now the delta's broke something, undo it and reset deltas |
| if (!worked) { |
| for (int i = 0; i < gridLen; ++i) { |
| gridLayout[i] -= gridDelta[i]; |
| gridDelta[i] = 0; |
| } |
| } |
| } |
| else |
| gridLayout[0] = remainingLen[k]; |
| } |
| |
| positionFrames(); |
| |
| RenderObject *child = firstChild(); |
| if (!child) |
| goto end2; |
| |
| if (!m_hSplitVar && !m_vSplitVar) { |
| if (!m_vSplitVar && element()->totalCols() > 1) { |
| m_vSplitVar = new bool[element()->totalCols()]; |
| for (int i = 0; i < element()->totalCols(); i++) m_vSplitVar[i] = true; |
| } |
| if (!m_hSplitVar && element()->totalRows() > 1) { |
| m_hSplitVar = new bool[element()->totalRows()]; |
| for (int i = 0; i < element()->totalRows(); i++) m_hSplitVar[i] = true; |
| } |
| |
| for (int r = 0; r < element()->totalRows(); r++) { |
| for (int c = 0; c < element()->totalCols(); c++) { |
| bool fixed = false; |
| |
| if (child->isFrameSet()) |
| fixed = static_cast<RenderFrameSet*>(child)->element()->noResize(); |
| else |
| fixed = static_cast<RenderFrame*>(child)->element()->noResize(); |
| |
| if (fixed) { |
| if (element()->totalCols() > 1) { |
| if (c>0) m_vSplitVar[c-1] = false; |
| m_vSplitVar[c] = false; |
| } |
| if (element()->totalRows() > 1) { |
| if (r>0) m_hSplitVar[r-1] = false; |
| m_hSplitVar[r] = false; |
| } |
| child = child->nextSibling(); |
| if (!child) |
| goto end1; |
| } |
| } |
| } |
| |
| } |
| end1: |
| RenderContainer::layout(); |
| end2: |
| setNeedsLayout(false); |
| } |
| |
| void RenderFrameSet::positionFrames() |
| { |
| int r; |
| int c; |
| |
| RenderObject *child = firstChild(); |
| if (!child) |
| return; |
| |
| // Node *child = _first; |
| // if (!child) return; |
| |
| int yPos = 0; |
| |
| for (r = 0; r < element()->totalRows(); r++) { |
| int xPos = 0; |
| for (c = 0; c < element()->totalCols(); c++) { |
| child->setPos(xPos, yPos); |
| // has to be resized and itself resize its contents |
| if ((m_gridLayout[1][c] != child->width()) || (m_gridLayout[0][r] != child->height())) { |
| child->setWidth(m_gridLayout[1][c]); |
| child->setHeight(m_gridLayout[0][r]); |
| child->setNeedsLayout(true); |
| child->layout(); |
| } |
| |
| xPos += m_gridLayout[1][c] + element()->border(); |
| child = child->nextSibling(); |
| |
| if (!child) |
| return; |
| |
| } |
| |
| yPos += m_gridLayout[0][r] + element()->border(); |
| } |
| |
| // all the remaining frames are hidden to avoid ugly |
| // spurious unflowed frames |
| while (child) { |
| child->setWidth(0); |
| child->setHeight(0); |
| child->setNeedsLayout(false); |
| |
| child = child->nextSibling(); |
| } |
| } |
| |
| bool RenderFrameSet::userResize(MouseEvent* evt) |
| { |
| if (needsLayout()) |
| return false; |
| |
| bool res = false; |
| int _x = evt->pageX(); |
| int _y = evt->pageY(); |
| |
| if (!m_resizing && evt->type() == mousemoveEvent || evt->type() == mousedownEvent) { |
| m_hSplit = -1; |
| m_vSplit = -1; |
| //bool resizePossible = true; |
| |
| // check if we're over a horizontal or vertical boundary |
| int pos = m_gridLayout[1][0] + xPos(); |
| for (int c = 1; c < element()->totalCols(); c++) { |
| if (_x >= pos && _x <= pos+element()->border()) { |
| if (m_vSplitVar && m_vSplitVar[c - 1]) |
| m_vSplit = c - 1; |
| res = true; |
| break; |
| } |
| pos += m_gridLayout[1][c] + element()->border(); |
| } |
| |
| pos = m_gridLayout[0][0] + yPos(); |
| for (int r = 1; r < element()->totalRows(); r++) { |
| if (_y >= pos && _y <= pos+element()->border()) { |
| if (m_hSplitVar && m_hSplitVar[r - 1]) |
| m_hSplit = r - 1; |
| res = true; |
| break; |
| } |
| pos += m_gridLayout[0][r] + element()->border(); |
| } |
| |
| if (evt->type() == mousedownEvent) { |
| setResizing(true); |
| m_vSplitPos = _x; |
| m_hSplitPos = _y; |
| m_oldpos = -1; |
| } else |
| view()->frameView()->setCursor(pointerCursor()); |
| } |
| |
| // ### check the resize is not going out of bounds. |
| if (m_resizing && evt->type() == mouseupEvent) { |
| setResizing(false); |
| |
| if (m_vSplit != -1) { |
| int delta = m_vSplitPos - _x; |
| m_gridDelta[1][m_vSplit] -= delta; |
| m_gridDelta[1][m_vSplit+1] += delta; |
| } |
| if (m_hSplit != -1) { |
| int delta = m_hSplitPos - _y; |
| m_gridDelta[0][m_hSplit] -= delta; |
| m_gridDelta[0][m_hSplit+1] += delta; |
| } |
| |
| // this just schedules the relayout |
| // important, otherwise the moving indicator is not correctly erased |
| setNeedsLayout(true); |
| } else if (m_resizing || evt->type() == mouseupEvent) { |
| FrameView* v = view()->frameView(); |
| v->disableFlushDrawing(); |
| GraphicsContext* context = v->lockDrawingFocus(); |
| |
| IntRect r(xPos(), yPos(), width(), height()); |
| const int rBord = 3; |
| int sw = element()->border(); |
| int p = m_resizing ? (m_vSplit > -1 ? _x : _y) : -1; |
| const RGBA32 greyQuarterOpacity = 0x40A0A0A0; |
| if (m_vSplit > -1) { |
| if (m_oldpos >= 0) |
| v->updateContents(IntRect(m_oldpos + sw/2 - rBord, r.y(), 2 * rBord, r.height()), true); |
| if (p >= 0) { |
| context->setPen(Pen::NoPen); |
| context->setFillColor(greyQuarterOpacity); |
| context->drawRect(IntRect(p + sw/2 - rBord, r.y(), 2 * rBord, r.height())); |
| } |
| } else { |
| if (m_oldpos >= 0) |
| v->updateContents(IntRect(r.x(), m_oldpos + sw/2 - rBord, r.width(), 2 * rBord), true); |
| if (p >= 0) { |
| context->setPen(Pen::NoPen); |
| context->setFillColor(greyQuarterOpacity); |
| context->drawRect(IntRect(r.x(), p + sw/2 - rBord, r.width(), 2 * rBord)); |
| } |
| } |
| m_oldpos = p; |
| |
| v->unlockDrawingFocus(context); |
| v->enableFlushDrawing(); |
| } |
| |
| return res; |
| } |
| |
| void RenderFrameSet::setResizing(bool e) |
| { |
| m_resizing = e; |
| for (RenderObject* p = parent(); p; p = p->parent()) |
| if (p->isFrameSet()) |
| static_cast<RenderFrameSet*>(p)->m_clientResizing = m_resizing; |
| view()->frameView()->setResizingFrameSet(e ? element() : 0); |
| } |
| |
| bool RenderFrameSet::canResize(int _x, int _y) |
| { |
| // if we haven't received a layout, then the gridLayout doesn't contain useful data yet |
| if (needsLayout() || !m_gridLayout[0] || !m_gridLayout[1]) |
| return false; |
| |
| // check if we're over a horizontal or vertical boundary |
| int pos = m_gridLayout[1][0]; |
| for (int c = 1; c < element()->totalCols(); c++) |
| if (_x >= pos && _x <= pos+element()->border()) |
| return true; |
| |
| pos = m_gridLayout[0][0]; |
| for (int r = 1; r < element()->totalRows(); r++) |
| if (_y >= pos && _y <= pos+element()->border()) |
| return true; |
| |
| return false; |
| } |
| |
| #ifndef NDEBUG |
| void RenderFrameSet::dump(TextStream* stream, DeprecatedString ind) const |
| { |
| *stream << " totalrows=" << element()->totalRows(); |
| *stream << " totalcols=" << element()->totalCols(); |
| |
| unsigned i; |
| for (i = 0; i < (unsigned)element()->totalRows(); i++) |
| *stream << " hSplitvar(" << i << ")=" << m_hSplitVar[i]; |
| |
| for (i = 0; i < (unsigned)element()->totalCols(); i++) |
| *stream << " vSplitvar(" << i << ")=" << m_vSplitVar[i]; |
| |
| RenderContainer::dump(stream,ind); |
| } |
| #endif |
| |
| } |
