Mercurial > octave
changeset 24762:ed2d9ef336a7
resize varible editor model on scrollbar actions
* variable-editor.h, variable-editor.cc
(var_editor_tab::handle_horizontal_scroll_action,
var_editor_tab::handle_vertical_scroll_action): New slots.
(var_editor_tab_widget::var_editor_tab_widget): Connect signals and
slots for scrollbar actions.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 14 Feb 2018 23:50:55 -0500 |
| parents | d7c3918955e6 |
| children | 95142fc85564 |
| files | libgui/src/variable-editor.cc libgui/src/variable-editor.h |
| diffstat | 2 files changed, 62 insertions(+), 0 deletions(-) [+] |
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--- a/libgui/src/variable-editor.cc Wed Feb 14 23:46:41 2018 -0500 +++ b/libgui/src/variable-editor.cc Wed Feb 14 23:50:55 2018 -0500 @@ -35,6 +35,7 @@ #include <QLabel> #include <QMenu> #include <QPalette> +#include <QScrollBar> #include <QSignalMapper> #include <QStackedWidget> #include <QTableView> @@ -154,6 +155,54 @@ } } +void +var_editor_tab::handle_horizontal_scroll_action (int action) +{ + if (action == QAbstractSlider::SliderSingleStepAdd + || action == QAbstractSlider::SliderPageStepAdd + || action == QAbstractSlider::SliderToMaximum + || action == QAbstractSlider::SliderMove) + { + QTableView *edit_view = get_edit_view (); + + if (edit_view) + { + QScrollBar *sb = edit_view->horizontalScrollBar (); + + if (sb && sb->value () == sb->maximum ()) + { + int new_cols = m_model->display_columns () + 16; + + m_model->maybe_resize_columns (new_cols); + } + } + } +} + +void +var_editor_tab::handle_vertical_scroll_action (int action) +{ + if (action == QAbstractSlider::SliderSingleStepAdd + || action == QAbstractSlider::SliderPageStepAdd + || action == QAbstractSlider::SliderToMaximum + || action == QAbstractSlider::SliderMove) + { + QTableView *edit_view = get_edit_view (); + + if (edit_view) + { + QScrollBar *sb = edit_view->verticalScrollBar (); + + if (sb && sb->value () == sb->maximum ()) + { + int new_rows = m_model->display_rows () + 16; + + m_model->maybe_resize_rows (new_rows); + } + } + } +} + // Functions for reimplemented tab widget. var_editor_tab_widget::var_editor_tab_widget (QWidget *p) @@ -440,6 +489,15 @@ connect (table, SIGNAL (doubleClicked (const QModelIndex&)), this, SLOT (double_click (const QModelIndex&))); + table->setHorizontalScrollMode (QAbstractItemView::ScrollPerPixel); + table->setVerticalScrollMode (QAbstractItemView::ScrollPerPixel); + + connect (table->horizontalScrollBar (), SIGNAL (actionTriggered (int)), + page, SLOT (handle_horizontal_scroll_action (int))); + + connect (table->verticalScrollBar (), SIGNAL (actionTriggered (int)), + page, SLOT (handle_vertical_scroll_action (int))); + table->setFont (m_font); table->setStyleSheet (m_stylesheet); table->setAlternatingRowColors (m_alternate_rows);
--- a/libgui/src/variable-editor.h Wed Feb 14 23:46:41 2018 -0500 +++ b/libgui/src/variable-editor.h Wed Feb 14 23:50:55 2018 -0500 @@ -80,6 +80,10 @@ void set_editable (bool); + void handle_horizontal_scroll_action (int action); + + void handle_vertical_scroll_action (int action); + private: variable_editor_model *m_model;