static void LayoutCell(txt_table_t *table, int x, int y,
int draw_x, int draw_y)
{
txt_widget_t *widget;
int col_width;
widget = table->widgets[y * table->columns + x];
col_width = widget->w;
// Adjust x position based on alignment property
switch (widget->align)
{
case TXT_HORIZ_LEFT:
widget->w = col_width;
break;
case TXT_HORIZ_CENTER:
TXT_CalcWidgetSize(widget);
// Separators are always drawn left-aligned.
if (widget->widget_class != &txt_separator_class)
{
draw_x += (col_width - widget->w) / 2;
}
break;
case TXT_HORIZ_RIGHT:
TXT_CalcWidgetSize(widget);
if (widget->widget_class != &txt_separator_class)
{
draw_x += col_width - widget->w;
}
break;
}
// Set the position for this widget
widget->x = draw_x;
widget->y = draw_y;
// Recursively lay out any widgets contained in the widget
TXT_LayoutWidget(widget);
}
static void CalcActionAreaSize(txt_window_t *window,
unsigned int *w, unsigned int *h)
{
txt_widget_t *widget;
int i;
*w = 0;
*h = 0;
// Calculate the width of all the action widgets and use this
// to create an overall min. width of the action area
for (i=0; i<3; ++i)
{
widget = (txt_widget_t *) window->actions[i];
if (widget != NULL)
{
TXT_CalcWidgetSize(widget);
*w += widget->w;
if (widget->h > *h)
{
*h = widget->h;
}
}
}
}
static void TXT_FileSelectSizeCalc(TXT_UNCAST_ARG(fileselect))
{
TXT_CAST_ARG(txt_fileselect_t, fileselect);
// Calculate widget size, but override the width to always
// be the configured size.
TXT_CalcWidgetSize(fileselect->inputbox);
fileselect->widget.w = fileselect->size;
fileselect->widget.h = fileselect->inputbox->widget.h;
}
static void LayoutActionArea(txt_window_t *window)
{
txt_widget_t *widget;
// Left action
if (window->actions[TXT_HORIZ_LEFT] != NULL)
{
widget = (txt_widget_t *) window->actions[TXT_HORIZ_LEFT];
TXT_CalcWidgetSize(widget);
widget->x = window->window_x + 2;
widget->y = window->window_y + window->window_h - widget->h - 1;
}
// Draw the center action
if (window->actions[TXT_HORIZ_CENTER] != NULL)
{
widget = (txt_widget_t *) window->actions[TXT_HORIZ_CENTER];
TXT_CalcWidgetSize(widget);
widget->x = window->window_x + (window->window_w - widget->w - 2) / 2;
widget->y = window->window_y + window->window_h - widget->h - 1;
}
// Draw the right action
if (window->actions[TXT_HORIZ_RIGHT] != NULL)
{
widget = (txt_widget_t *) window->actions[TXT_HORIZ_RIGHT];
TXT_CalcWidgetSize(widget);
widget->x = window->window_x + window->window_w - 2 - widget->w;
widget->y = window->window_y + window->window_h - widget->h - 1;
}
}
static void TXT_ScrollPaneSizeCalc(TXT_UNCAST_ARG(scrollpane))
{
TXT_CAST_ARG(txt_scrollpane_t, scrollpane);
int scrollbars;
if (scrollpane->child != NULL)
{
TXT_CalcWidgetSize(scrollpane->child);
}
// Expand as necessary (to ensure that no scrollbars are needed)?
if (scrollpane->expand_w)
{
scrollpane->w = FullWidth(scrollpane);
}
if (scrollpane->expand_h)
{
scrollpane->h = FullHeight(scrollpane);
}
scrollpane->widget.w = scrollpane->w;
scrollpane->widget.h = scrollpane->h;
// If we have scroll bars, we need to expand slightly to
// accomodate them. Eg. if we have a vertical scrollbar, we
// need to be an extra character wide.
scrollbars = NeedsScrollbars(scrollpane);
if (scrollbars & SCROLLBAR_HORIZONTAL)
{
++scrollpane->widget.h;
}
if (scrollbars & SCROLLBAR_VERTICAL)
{
++scrollpane->widget.w;
}
if (scrollpane->child != NULL)
{
if (scrollpane->child->w < scrollpane->w)
{
scrollpane->child->w = scrollpane->w;
}
if (scrollpane->child->h < scrollpane->h)
{
scrollpane->child->h = scrollpane->h;
}
}
}
static void CalcRowColSizes(txt_table_t *table,
unsigned int *row_heights,
unsigned int *col_widths)
{
int x, y;
int rows;
txt_widget_t *widget;
rows = TableRows(table);
memset(col_widths, 0, sizeof(int) * table->columns);
for (y=0; y<rows; ++y)
{
row_heights[y] = 0;
for (x=0; x<table->columns; ++x)
{
if (y * table->columns + x >= table->num_widgets)
break;
widget = table->widgets[y * table->columns + x];
// NULL represents an empty spacer
if (widget != NULL)
{
TXT_CalcWidgetSize(widget);
if (widget->h > row_heights[y])
row_heights[y] = widget->h;
if (widget->w > col_widths[x])
col_widths[x] = widget->w;
}
}
}
}
void TXT_LayoutWindow(txt_window_t *window)
{
txt_widget_t *widgets = (txt_widget_t *) window;
unsigned int widgets_w;
unsigned int actionarea_w, actionarea_h;
// Calculate size of table
TXT_CalcWidgetSize(window);
// Widgets area: add one character of padding on each side
widgets_w = widgets->w + 2;
// Calculate the size of the action area
// Make window wide enough to action area
CalcActionAreaSize(window, &actionarea_w, &actionarea_h);
if (actionarea_w > widgets_w)
widgets_w = actionarea_w;
// Set the window size based on widgets_w
window->window_w = widgets_w + 2;
window->window_h = widgets->h + 1;
// If the window has a title, add an extra two lines
if (window->title != NULL)
{
window->window_h += 2;
}
// If the window has an action area, add extra lines
if (actionarea_h > 0)
{
window->window_h += actionarea_h + 1;
}
// Use the x,y position as the centerpoint and find the location to
// draw the window.
CalcWindowPosition(window);
// Set the table size and position
widgets->w = widgets_w - 2;
// widgets->h (already set)
widgets->x = window->window_x + 2;
widgets->y = window->window_y;
if (window->title != NULL)
{
widgets->y += 2;
}
// Layout the table and action area
LayoutActionArea(window);
TXT_LayoutWidget(widgets);
}
static void LayoutActionArea(txt_window_t *window)
{
txt_widget_t *widget;
int space_available;
int space_left_offset;
// We need to calculate the available horizontal space for the center
// action widget, so that we can center it within it.
// To start with, we have the entire action area available.
space_available = window->window_w;
space_left_offset = 0;
// Left action
if (window->actions[TXT_HORIZ_LEFT] != NULL)
{
widget = (txt_widget_t *) window->actions[TXT_HORIZ_LEFT];
TXT_CalcWidgetSize(widget);
widget->x = window->window_x + 1;
widget->y = window->window_y + window->window_h - widget->h - 1;
// Adjust available space:
space_available -= widget->w;
space_left_offset += widget->w;
}
// Draw the right action
if (window->actions[TXT_HORIZ_RIGHT] != NULL)
{
widget = (txt_widget_t *) window->actions[TXT_HORIZ_RIGHT];
TXT_CalcWidgetSize(widget);
widget->x = window->window_x + window->window_w - 1 - widget->w;
widget->y = window->window_y + window->window_h - widget->h - 1;
// Adjust available space:
space_available -= widget->w;
}
// Draw the center action
if (window->actions[TXT_HORIZ_CENTER] != NULL)
{
widget = (txt_widget_t *) window->actions[TXT_HORIZ_CENTER];
TXT_CalcWidgetSize(widget);
// The left and right widgets have left a space sandwiched between
// them. Center this widget within that space.
widget->x = window->window_x
+ space_left_offset
+ (space_available - widget->w) / 2;
widget->y = window->window_y + window->window_h - widget->h - 1;
}
}
static void CalcRowColSizes(txt_table_t *table,
unsigned int *row_heights,
unsigned int *col_widths)
{
int x, y;
int rows;
txt_widget_t *widget;
rows = TableRows(table);
memset(col_widths, 0, sizeof(int) * table->columns);
for (y = 0; y < rows; ++y)
{
row_heights[y] = 0;
for (x = 0; x < table->columns; ++x)
{
if (y * table->columns + x >= table->num_widgets)
break;
widget = table->widgets[y * table->columns + x];
if (IsActualWidget(widget))
{
TXT_CalcWidgetSize(widget);
}
// In the first pass we ignore overflowing cells.
if (IsOverflowingCell(table, x, y))
{
continue;
}
// NULL represents an empty spacer
if (IsActualWidget(widget))
{
if (widget->h > row_heights[y])
row_heights[y] = widget->h;
if (widget->w > col_widths[x])
col_widths[x] = widget->w;
}
}
}
// In the second pass, we go through again and process overflowing
// widgets, to ensure that they will fit.
for (y = 0; y < rows; ++y)
{
for (x = 0; x < table->columns; ++x)
{
unsigned int w, h;
if (y * table->columns + x >= table->num_widgets)
break;
widget = table->widgets[y * table->columns + x];
if (!IsActualWidget(widget))
{
continue;
}
// Expand column width and row heights as needed.
CalculateWidgetDimensions(table, x, y, col_widths, row_heights,
&w, &h);
if (w < widget->w)
{
col_widths[x] += widget->w - w;
}
if (h < widget->h)
{
row_heights[y] += widget->h - h;
}
}
}
}
