ghostwriter/src/ThemeSelectionDialog.cpp at master · jackcoolpython/ghostwriter · GitHub

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/***********************************************************************

* 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 3 of the License, or

* (at your option) 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, see <http://www.gnu.org/licenses/>.

***********************************************************************/

#include <QStringList>

#include <QListWidget>

#include <QGridLayout>

#include <QDialogButtonBox>

#include <QPushButton>

#include <QList>

#include <QString>

#include <QMessageBox>

#include <QListWidgetItem>

#include <QPainter>

#include <QIcon>

#include <QPixmap>

#include <QImage>

#include <QBrush>

#include <QColor>

#include <QSize>

#include "ThemeSelectionDialog.h"

#include "ThemeFactory.h"

#include "ThemePreviewer.h"

#include "ThemeEditorDialog.h"

#include "MessageBoxHelper.h"

#define GW_LIST_WIDGET_ICON_WIDTH 200

#define GW_LIST_WIDGET_ICON_HEIGHT 125

ThemeSelectionDialog::ThemeSelectionDialog

(

const QString& currentThemeName,

QWidget* parent

)

: QDialog(parent)

{

qreal dpr = 1.0;

#if QT_VERSION >= 0x050600

dpr = devicePixelRatioF();

#endif

iconWidth = GW_LIST_WIDGET_ICON_WIDTH * dpr;

iconHeight = GW_LIST_WIDGET_ICON_HEIGHT * dpr;

this->setWindowTitle(tr("Themes"));

this->setAttribute(Qt::WA_DeleteOnClose);

QGridLayout* layout = new QGridLayout();

QStringList availableThemes =

ThemeFactory::getInstance()->getAvailableThemes();

// Find view sizes

int focush = style()->pixelMetric(QStyle::PM_FocusFrameHMargin);

int focusv = style()->pixelMetric(QStyle::PM_FocusFrameVMargin);

int frame = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);

int scrollbar = style()->pixelMetric(QStyle::PM_SliderThickness) +

style()->pixelMetric(QStyle::PM_ScrollBarExtent);

const int spacing = 10;

const int rowCount = 3;

const int columnCount = 4;

QSize viewSize

(

((GW_LIST_WIDGET_ICON_WIDTH + frame + focush + (spacing * 2)) * columnCount) + scrollbar,

(GW_LIST_WIDGET_ICON_HEIGHT + fontMetrics().height() + frame + focusv + (spacing * 2)) * rowCount

);

// Set up theme list

themeListWidget = new QListWidget(this);

themeListWidget->setSortingEnabled(true);

themeListWidget->setFlow(QListView::LeftToRight);

themeListWidget->setViewMode(QListView::IconMode);

themeListWidget->setIconSize(QSize(GW_LIST_WIDGET_ICON_WIDTH, GW_LIST_WIDGET_ICON_HEIGHT));

themeListWidget->setSpacing(spacing);

themeListWidget->setMovement(QListView::Static);

themeListWidget->setResizeMode(QListView::Adjust);

themeListWidget->setSelectionMode(QAbstractItemView::SingleSelection);

themeListWidget->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

themeListWidget->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);

themeListWidget->setWordWrap(true);

themeListWidget->setUniformItemSizes(true);

themeListWidget->setMinimumSize(viewSize);

for (int i = 0; i < availableThemes.size(); i++)

{

QString themeName = availableThemes[i];

QString err;

QIcon themeIcon;

Theme theme = ThemeFactory::getInstance()->loadTheme(themeName, err);

if (!err.isNull())

{

themeIcon = QIcon(":resources/images/unavailable.svg");

}

else

{

ThemePreviewer previewer(theme, iconWidth, iconHeight);

themeIcon = previewer.getIcon();

}

QListWidgetItem* item = new QListWidgetItem

(

themeIcon,

themeName,

themeListWidget

);

themeListWidget->insertItem(themeListWidget->count(), item);

if (themeName == currentThemeName)

{

themeListWidget->setCurrentItem(item);

currentTheme = theme;

}

QDialogButtonBox* buttonBox = new QDialogButtonBox(Qt::Horizontal, this);

QPushButton* newThemeButton = new QPushButton(" + ");

QPushButton* deleteThemeButton = new QPushButton(" - ");

QPushButton* editThemeButton = new QPushButton(tr("Edit..."));

buttonBox->addButton(newThemeButton, QDialogButtonBox::ActionRole);

buttonBox->addButton(deleteThemeButton, QDialogButtonBox::ActionRole);

buttonBox->addButton(editThemeButton, QDialogButtonBox::ActionRole);

buttonBox->addButton(QDialogButtonBox::Close);

layout->addWidget(themeListWidget, 0, 0, 1, 1);

layout->addWidget(buttonBox, 1, 0, 1, 1);

this->setLayout(layout);

connect(buttonBox->button(QDialogButtonBox::Close), SIGNAL(clicked()), this, SLOT(close()));

connect(newThemeButton, SIGNAL(clicked()), this, SLOT(onNewTheme()));

connect(deleteThemeButton, SIGNAL(clicked()), this, SLOT(onDeleteTheme()));

connect(editThemeButton, SIGNAL(clicked()), this, SLOT(onEditTheme()));

connect(themeListWidget, SIGNAL(itemSelectionChanged()), this, SLOT(onThemeSelected()));

currentThemeIsValid = true;

currentThemeIsNew = false;

}

ThemeSelectionDialog::~ThemeSelectionDialog()

{

;

}

void ThemeSelectionDialog::onThemeSelected()

{

QList<QListWidgetItem*> selectedThemes = themeListWidget->selectedItems();

QString themeName;

Theme theme;

(

selectedThemes.isEmpty() ||

selectedThemes[0]->text().isNull() ||

selectedThemes[0]->text().isEmpty()

)

{

return;

}

currentThemeIsValid = true;

themeName = selectedThemes[0]->text();

QString err;

if (!currentThemeIsNew)

{

theme = ThemeFactory::getInstance()->loadTheme(themeName, err);

currentTheme = theme;

if (!err.isNull())

{

// Show an error dialog telling the user that the theme could not

// be loaded.

MessageBoxHelper::critical

(

this,

tr("Unable to load theme."),

err

);

currentTheme.setName(themeName);

currentThemeIsValid = false;

return;

}

else

{

theme = currentTheme;

}

emit applyTheme(theme);

}

void ThemeSelectionDialog::onNewTheme()

{

QString err = QString();

Theme newTheme;

QList<QListWidgetItem*> selectedThemes = themeListWidget->selectedItems();

if (selectedThemes.size() > 0)

{

newTheme = ThemeFactory::getInstance()->loadTheme

(

selectedThemes[0]->text(),

err

);

}

else

{

newTheme = ThemeFactory::getInstance()->getDefaultTheme();

}

newTheme.setBuiltIn(false);

// It doesn't matter if there was an error, since loadTheme will

// return a default, built-in theme if it fails.

err = QString();

QIcon themeIcon;

if (!err.isNull())

{

themeIcon = QIcon(":resources/images/unavailable.svg");

}

else

{

ThemePreviewer previewer(newTheme, iconWidth, iconHeight);

themeIcon = previewer.getIcon();

}

newTheme.setName(ThemeFactory::getInstance()->generateUntitledThemeName());

ThemeFactory::getInstance()->saveTheme(newTheme.getName(), newTheme, err);

QListWidgetItem* item =

new QListWidgetItem(themeIcon, newTheme.getName(), themeListWidget);

themeListWidget->insertItem(themeListWidget->count(), item);

currentThemeIsNew = true;

currentTheme = newTheme;

currentThemeIsValid = true;

this->themeListWidget->setCurrentItem(item);

ThemeEditorDialog themeEditorDialog(newTheme, this);

connect(&themeEditorDialog, SIGNAL(themeUpdated(Theme)), this, SLOT(onThemeUpdated(Theme)));

themeEditorDialog.exec();

}

void ThemeSelectionDialog::onDeleteTheme()

{

QList<QListWidgetItem*> selectedThemes = themeListWidget->selectedItems();

if (selectedThemes.isEmpty())

{

// Ignore if no theme is selected.

return;

}

// If the theme is one of the built in themes, display an error.

if (currentTheme.isBuiltIn())

{

MessageBoxHelper::critical

(

this,

tr("Cannot delete theme."),

tr("Sorry, this is a built-in theme that cannot be deleted.")

);

return;

}

QString themeName = selectedThemes[0]->text();

int result =

MessageBoxHelper::question

(

this,

tr("Are you sure you want to permanently delete the '%1' theme?")

.arg(themeName),

QString(),

QMessageBox::Yes | QMessageBox::No,

QMessageBox::No

);

if (QMessageBox::Yes == result)

{

QString err;

ThemeFactory::getInstance()->deleteTheme(themeName, err);

if (!err.isNull())

{

MessageBoxHelper::critical

(

this,

tr("Failed to delete theme."),

err

);

}

else

{

int row = themeListWidget->row(selectedThemes[0]);

QListWidgetItem* item = themeListWidget->takeItem(row);

if (NULL != item)

{

delete item;

item = NULL;

}

void ThemeSelectionDialog::onEditTheme()

{

QList<QListWidgetItem*> selectedThemes = themeListWidget->selectedItems();

if (!selectedThemes.isEmpty())

{

// If the theme is one of the built in themes, display an error.

if (currentTheme.isBuiltIn())

{

MessageBoxHelper::critical

(

this,

tr("Cannot edit theme."),

tr("Sorry, this is a built-in theme that cannot be edited.")

);

return;

}

Theme themeToEdit = currentTheme;

if (!currentThemeIsValid)

{

QString err;

themeToEdit = ThemeFactory::getInstance()->loadTheme("", err);

themeToEdit.setName(currentTheme.getName());

}

ThemeEditorDialog themeEditorDialog(themeToEdit, this);

connect(&themeEditorDialog, SIGNAL(themeUpdated(Theme)), this, SLOT(onThemeUpdated(Theme)));

themeEditorDialog.exec();

}

void ThemeSelectionDialog::onThemeUpdated(const Theme& theme)

{

// Update theme name and preview icon, as applicable.

QList<QListWidgetItem*> selectedThemes = themeListWidget->selectedItems();

if (!selectedThemes.isEmpty())

{

QListWidgetItem* item = selectedThemes[0];

if (NULL != item)

{

if (theme.getName() != currentTheme.getName())

{

item->setText(theme.getName());

}

currentTheme = theme;

currentThemeIsValid = true;

ThemePreviewer previewer(theme, iconWidth, iconHeight);

QIcon themeIcon = previewer.getIcon();

item->setIcon(themeIcon);

}

currentThemeIsNew = false;

// Notify of theme change so it can be applied.

emit applyTheme(theme);

}

ghostwriter/src/ThemeSelectionDialog.cpp at master · jackcoolpython/ghostwriter · GitHub

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