static int TXT_TableSelectable(TXT_UNCAST_ARG(table))
{
TXT_CAST_ARG(txt_table_t, table);
int i;
// Is the currently-selected cell selectable?
if (SelectableCell(table, table->selected_x, table->selected_y))
{
return 1;
}
// Find the first selectable cell and set selected_x, selected_y.
for (i = 0; i < table->num_widgets; ++i)
{
if (IsActualWidget(table->widgets[i])
&& TXT_SelectableWidget(table->widgets[i]))
{
ChangeSelection(table, i % table->columns, i / table->columns);
return 1;
}
}
// No selectable widgets exist within the table.
return 0;
}
static int TXT_ScrollPaneSelectable(TXT_UNCAST_ARG(scrollpane))
{
TXT_CAST_ARG(txt_scrollpane_t, scrollpane);
// If scroll bars are displayed, the scroll pane must be selectable
// so that we can use the arrow keys to scroll around.
if (NeedsScrollbars(scrollpane))
{
return 1;
}
// Otherwise, whether this is selectable depends on the child widget.
return TXT_SelectableWidget(scrollpane->child);
}
static int SelectableCell(txt_table_t *table, int x, int y)
{
txt_widget_t *widget;
int i;
if (x < 0 || x >= table->columns)
{
return 0;
}
i = y * table->columns + x;
if (i >= 0 && i < table->num_widgets)
{
widget = table->widgets[i];
return IsActualWidget(widget)
&& TXT_SelectableWidget(widget)
&& widget->visible;
}
return 0;
}
static void TXT_TableMousePress(TXT_UNCAST_ARG(table), int x, int y, int b)
{
TXT_CAST_ARG(txt_table_t, table);
txt_widget_t *widget;
int i;
for (i=0; i<table->num_widgets; ++i)
{
widget = table->widgets[i];
// NULL widgets are spacers
if (IsActualWidget(widget))
{
if (x >= widget->x && x < (signed) (widget->x + widget->w)
&& y >= widget->y && y < (signed) (widget->y + widget->h))
{
// This is the widget that was clicked!
// Select the cell if the widget is selectable
if (TXT_SelectableWidget(widget))
{
ChangeSelection(table, i % table->columns,
i / table->columns);
}
// Propagate click
TXT_WidgetMousePress(widget, x, y, b);
break;
}
}
}
}
static int TXT_TableKeyPress(TXT_UNCAST_ARG(table), int key)
{
TXT_CAST_ARG(txt_table_t, table);
int selected;
int rows;
rows = TableRows(table);
// Send to the currently selected widget first
selected = table->selected_y * table->columns + table->selected_x;
if (selected >= 0 && selected < table->num_widgets)
{
if (IsActualWidget(table->widgets[selected])
&& TXT_SelectableWidget(table->widgets[selected])
&& TXT_WidgetKeyPress(table->widgets[selected], key))
{
return 1;
}
}
if (key == KEY_TAB)
{
int dir;
int i;
dir = TXT_GetModifierState(TXT_MOD_SHIFT) ? -1 : 1;
// Cycle through all widgets until we find one that can be selected.
for (i = table->selected_y * table->columns + table->selected_x + dir;
i >= 0 && i < table->num_widgets;
i += dir)
{
if (IsActualWidget(table->widgets[i])
&& TXT_SelectableWidget(table->widgets[i]))
{
ChangeSelection(table, i % table->columns, i / table->columns);
return 1;
}
}
return 0;
}
if (key == KEY_DOWNARROW)
{
int new_x, new_y;
// Move cursor down to the next selectable widget
for (new_y = table->selected_y + 1; new_y < rows; ++new_y)
{
new_x = FindSelectableColumn(table, new_y, table->selected_x);
if (new_x >= 0)
{
// Found a selectable widget in this column!
ChangeSelection(table, new_x, new_y);
return 1;
}
}
}
if (key == KEY_UPARROW)
{
int new_x, new_y;
// Move cursor up to the next selectable widget
for (new_y = table->selected_y - 1; new_y >= 0; --new_y)
{
new_x = FindSelectableColumn(table, new_y, table->selected_x);
if (new_x >= 0)
{
// Found a selectable widget in this column!
ChangeSelection(table, new_x, new_y);
return 1;
}
}
}
if (key == KEY_LEFTARROW)
{
int new_x;
// Move cursor left
for (new_x = table->selected_x - 1; new_x >= 0; --new_x)
{
if (SelectableCell(table, new_x, table->selected_y))
{
// Found a selectable widget!
ChangeSelection(table, new_x, table->selected_y);
return 1;
}
}
}
if (key == KEY_RIGHTARROW)
{
int new_x;
// Move cursor left
for (new_x = table->selected_x + 1; new_x < table->columns; ++new_x)
{
if (SelectableCell(table, new_x, table->selected_y))
{
// Found a selectable widget!
ChangeSelection(table, new_x, table->selected_y);
return 1;
}
}
}
return 0;
}
