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Diffstat (limited to 'src/gui/widgets/table.cpp')
| -rw-r--r-- | src/gui/widgets/table.cpp | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/src/gui/widgets/table.cpp b/src/gui/widgets/table.cpp new file mode 100644 index 00000000..f33d0abe --- /dev/null +++ b/src/gui/widgets/table.cpp @@ -0,0 +1,549 @@ +/* + * The Mana World + * Copyright (C) 2008 The Mana World Development Team + * + * This file is part of The Mana World. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "gui/widgets/table.h" + +#include "configuration.h" + +#include "gui/palette.h" +#include "gui/sdlinput.h" + +#include "utils/dtor.h" + +#include <guichan/actionlistener.hpp> +#include <guichan/graphics.hpp> +#include <guichan/key.hpp> + +float GuiTable::mAlpha = 1.0; + +class GuiTableActionListener : public gcn::ActionListener +{ +public: + GuiTableActionListener(GuiTable *_table, gcn::Widget *_widget, int _row, int _column); + + virtual ~GuiTableActionListener(); + + virtual void action(const gcn::ActionEvent& actionEvent); + +protected: + GuiTable *mTable; + int mRow; + int mColumn; + gcn::Widget *mWidget; +}; + + +GuiTableActionListener::GuiTableActionListener(GuiTable *table, gcn::Widget *widget, int row, int column) : + mTable(table), + mRow(row), + mColumn(column), + mWidget(widget) +{ + if (widget) + { + widget->addActionListener(this); + widget->_setParent(table); + } +} + +GuiTableActionListener::~GuiTableActionListener() +{ + if (mWidget) + { + mWidget->removeActionListener(this); + mWidget->_setParent(NULL); + } +} + +void GuiTableActionListener::action(const gcn::ActionEvent& actionEvent) +{ + mTable->setSelected(mRow, mColumn); + mTable->distributeActionEvent(); +} + + +GuiTable::GuiTable(TableModel *initial_model, gcn::Color background, + bool opacity) : + mLinewiseMode(false), + mWrappingEnabled(false), + mOpaque(opacity), + mBackgroundColor(background), + mModel(NULL), + mSelectedRow(0), + mSelectedColumn(0), + mTopWidget(NULL) +{ + setModel(initial_model); + setFocusable(true); + + addMouseListener(this); + addKeyListener(this); +} + +GuiTable::~GuiTable() +{ + uninstallActionListeners(); + delete mModel; +} + +TableModel *GuiTable::getModel() const +{ + return mModel; +} + +void GuiTable::setModel(TableModel *new_model) +{ + if (mModel) + { + uninstallActionListeners(); + mModel->removeListener(this); + } + + mModel = new_model; + installActionListeners(); + + if (new_model) + { + new_model->installListener(this); + recomputeDimensions(); + } +} + +void GuiTable::recomputeDimensions() +{ + int rows_nr = mModel->getRows(); + int columns_nr = mModel->getColumns(); + int width = 0; + int height = 0; + + if (mSelectedRow >= rows_nr) + mSelectedRow = rows_nr - 1; + + if (mSelectedColumn >= columns_nr) + mSelectedColumn = columns_nr - 1; + + for (int i = 0; i < columns_nr; i++) + width += getColumnWidth(i); + + height = getRowHeight() * rows_nr; + + setWidth(width); + setHeight(height); +} + +void GuiTable::setSelected(int row, int column) +{ + mSelectedColumn = column; + mSelectedRow = row; +} + +int GuiTable::getSelectedRow() const +{ + return mSelectedRow; +} + +int GuiTable::getSelectedColumn() const +{ + return mSelectedColumn; +} + +void GuiTable::setLinewiseSelection(bool linewise) +{ + mLinewiseMode = linewise; +} + +int GuiTable::getRowHeight() const +{ + if (mModel) + return mModel->getRowHeight() + 1; // border + else + return 0; +} + +int GuiTable::getColumnWidth(int i) const +{ + if (mModel) + return mModel->getColumnWidth(i) + 1; // border + else + return 0; +} + +void GuiTable::setSelectedRow(int selected) +{ + if (!mModel) + { + mSelectedRow = -1; + } + else + { + if (selected < 0 && !mWrappingEnabled) + { + mSelectedRow = -1; + } + else if (selected >= mModel->getRows() && mWrappingEnabled) + { + mSelectedRow = 0; + } + else if ((selected >= mModel->getRows() && !mWrappingEnabled) || + (selected < 0 && mWrappingEnabled)) + { + mSelectedRow = mModel->getRows() - 1; + } + else + { + mSelectedRow = selected; + } + } +} + +void GuiTable::setSelectedColumn(int selected) +{ + if (!mModel) + { + mSelectedColumn = -1; + } + else + { + if ((selected >= mModel->getColumns() && mWrappingEnabled) || + (selected < 0 && !mWrappingEnabled)) + { + mSelectedColumn = 0; + } + else if ((selected >= mModel->getColumns() && !mWrappingEnabled) || + (selected < 0 && mWrappingEnabled)) + { + mSelectedColumn = mModel->getColumns() - 1; + } + else + { + mSelectedColumn = selected; + } + } +} + +void GuiTable::uninstallActionListeners() +{ + delete_all(mActionListeners); + mActionListeners.clear(); +} + +void GuiTable::installActionListeners() +{ + if (!mModel) + return; + + int rows = mModel->getRows(); + int columns = mModel->getColumns(); + + for (int row = 0; row < rows; ++row) + for (int column = 0; column < columns; ++column) + { + gcn::Widget *widget = mModel->getElementAt(row, column); + mActionListeners.push_back(new GuiTableActionListener(this, widget, + row, column)); + } + + _setFocusHandler(_getFocusHandler()); // propagate focus handler to widgets +} + +// -- widget ops +void GuiTable::draw(gcn::Graphics* graphics) +{ + if (!mModel) + return; + + if (config.getValue("guialpha", 0.8) != mAlpha) + mAlpha = config.getValue("guialpha", 0.8); + + if (mOpaque) + { + graphics->setColor(guiPalette->getColor(Palette::BACKGROUND, + (int)(mAlpha * 255.0f))); + graphics->fillRectangle(gcn::Rectangle(0, 0, getWidth(), getHeight())); + } + + // First, determine how many rows we need to draw, and where we should start. + int first_row = -(getY() / getRowHeight()); + + if (first_row < 0) + first_row = 0; + + int rows_nr = 1 + (getHeight() / getRowHeight()); // May overestimate by one. + + int max_rows_nr = mModel->getRows() - first_row; // clip if neccessary: + if (max_rows_nr < rows_nr) + rows_nr = max_rows_nr; + + // Now determine the first and last column + // Take the easy way out; these are usually bounded and all visible. + int first_column = 0; + int last_column = mModel->getColumns() - 1; + + // Set up everything for drawing + int height = getRowHeight(); + int y_offset = first_row * height; + + for (int r = first_row; r < first_row + rows_nr; ++r) + { + int x_offset = 0; + + for (int c = first_column; c <= last_column; ++c) + { + gcn::Widget *widget = mModel->getElementAt(r, c); + int width = getColumnWidth(c); + if (widget) + { + gcn::Rectangle bounds(x_offset, y_offset, width, height); + + if (widget == mTopWidget) + { + bounds.height = widget->getHeight(); + bounds.width = widget->getWidth(); + } + + widget->setDimension(bounds); + + graphics->setColor(guiPalette->getColor(Palette::HIGHLIGHT, + (int)(mAlpha * 255.0f))); + + if (mLinewiseMode && r == mSelectedRow && c == 0) + { + graphics->fillRectangle(gcn::Rectangle(0, y_offset, + getWidth(), height)); + } + else if (!mLinewiseMode && + c == mSelectedColumn && r == mSelectedRow) + { + graphics->fillRectangle(gcn::Rectangle(x_offset, y_offset, + width, height)); + } + + graphics->pushClipArea(bounds); + widget->draw(graphics); + graphics->popClipArea(); + } + + x_offset += width; + } + + y_offset += height; + } + + if (mTopWidget) + { + gcn::Rectangle bounds = mTopWidget->getDimension(); + graphics->pushClipArea(bounds); + mTopWidget->draw(graphics); + graphics->popClipArea(); + } +} + +void GuiTable::moveToTop(gcn::Widget *widget) +{ + gcn::Widget::moveToTop(widget); + mTopWidget = widget; +} + +void GuiTable::moveToBottom(gcn::Widget *widget) +{ + gcn::Widget::moveToBottom(widget); + if (widget == mTopWidget) + mTopWidget = NULL; +} + +gcn::Rectangle GuiTable::getChildrenArea() const +{ + return gcn::Rectangle(0, 0, getWidth(), getHeight()); +} + +// -- KeyListener notifications +void GuiTable::keyPressed(gcn::KeyEvent& keyEvent) +{ + gcn::Key key = keyEvent.getKey(); + + if (key.getValue() == Key::ENTER || key.getValue() == Key::SPACE) + { + distributeActionEvent(); + keyEvent.consume(); + } + else if (key.getValue() == Key::UP) + { + setSelectedRow(mSelectedRow - 1); + keyEvent.consume(); + } + else if (key.getValue() == Key::DOWN) + { + setSelectedRow(mSelectedRow + 1); + keyEvent.consume(); + } + else if (key.getValue() == Key::LEFT) + { + setSelectedColumn(mSelectedColumn - 1); + keyEvent.consume(); + } + else if (key.getValue() == Key::RIGHT) + { + setSelectedColumn(mSelectedColumn + 1); + keyEvent.consume(); + } + else if (key.getValue() == Key::HOME) + { + setSelectedRow(0); + setSelectedColumn(0); + keyEvent.consume(); + } + else if (key.getValue() == Key::END) + { + setSelectedRow(mModel->getRows() - 1); + setSelectedColumn(mModel->getColumns() - 1); + keyEvent.consume(); + } +} + +// -- MouseListener notifications +void GuiTable::mousePressed(gcn::MouseEvent& mouseEvent) +{ + if (mouseEvent.getButton() == gcn::MouseEvent::LEFT) + { + int row = getRowForY(mouseEvent.getY()); + int column = getColumnForX(mouseEvent.getX()); + + if (row > -1 && column > -1 && + row < mModel->getRows() && column < mModel->getColumns()) + { + mSelectedColumn = column; + mSelectedRow = row; + } + + distributeActionEvent(); + } +} + +void GuiTable::mouseWheelMovedUp(gcn::MouseEvent& mouseEvent) +{ + if (isFocused()) + { + if (getSelectedRow() > 0 || (getSelectedRow() == 0 && mWrappingEnabled)) + { + setSelectedRow(getSelectedRow() - 1); + } + + mouseEvent.consume(); + } +} + +void GuiTable::mouseWheelMovedDown(gcn::MouseEvent& mouseEvent) +{ + if (isFocused()) + { + setSelectedRow(getSelectedRow() + 1); + + mouseEvent.consume(); + } +} + +void GuiTable::mouseDragged(gcn::MouseEvent& mouseEvent) +{ +} + +// -- TableModelListener notifications +void GuiTable::modelUpdated(bool completed) +{ + if (completed) + { + recomputeDimensions(); + installActionListeners(); + } + else + { // before the update? + mTopWidget = NULL; // No longer valid in general + uninstallActionListeners(); + } +} + +gcn::Widget *GuiTable::getWidgetAt(int x, int y) const +{ + int row = getRowForY(y); + int column = getColumnForX(x); + + if (mTopWidget && mTopWidget->getDimension().isPointInRect(x, y)) + return mTopWidget; + + if (row > -1 && column > -1) + { + gcn::Widget *w = mModel->getElementAt(row, column); + if (w && w->isFocusable()) + return w; + else + return NULL; // Grab the event locally + } + else + return NULL; +} + +int GuiTable::getRowForY(int y) const +{ + int row = -1; + + if (getRowHeight() > 0) + row = y / getRowHeight(); + + if (row < 0 || row >= mModel->getRows()) + return -1; + else + return row; +} + +int GuiTable::getColumnForX(int x) const +{ + int column; + int delta = 0; + + for (column = 0; column < mModel->getColumns(); column++) + { + delta += getColumnWidth(column); + if (x <= delta) + break; + } + + if (column < 0 || column >= mModel->getColumns()) + return -1; + else + return column; +} + +void GuiTable::_setFocusHandler(gcn::FocusHandler* focusHandler) +{ + gcn::Widget::_setFocusHandler(focusHandler); + + if (mModel) + { + for (int r = 0; r < mModel->getRows(); ++r) + { + for (int c = 0; c < mModel->getColumns(); ++c) + { + gcn::Widget *w = mModel->getElementAt(r, c); + if (w) + w->_setFocusHandler(focusHandler); + } + } + } +} |