/* TUI layout window management.
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1998-2019 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifndef TUI_LAYOUT_H
-#define TUI_LAYOUT_H
+#ifndef TUI_TUI_LAYOUT_H
+#define TUI_TUI_LAYOUT_H
#include "tui/tui.h"
#include "tui/tui-data.h"
+/* The basic object in a TUI layout. This represents a single piece
+ of screen real estate. Subclasses determine the exact
+ behavior. */
+class tui_layout_base
+{
+public:
+
+ DISABLE_COPY_AND_ASSIGN (tui_layout_base);
+
+ virtual ~tui_layout_base () = default;
+
+ /* Clone this object. Ordinarily a layout is cloned before it is
+ used, so that any necessary modifications do not affect the
+ "skeleton" layout. */
+ virtual std::unique_ptr<tui_layout_base> clone () const = 0;
+
+ /* Change the size and location of this layout. */
+ virtual void apply (int x, int y, int width, int height) = 0;
+
+ /* Return the minimum and maximum height of this layout. */
+ virtual void get_sizes (int *min_height, int *max_height) = 0;
+
+ /* True if the topmost item in this layout is boxed. */
+ virtual bool top_boxed_p () const = 0;
+
+ /* True if the bottommost item in this layout is boxed. */
+ virtual bool bottom_boxed_p () const = 0;
+
+ /* Return the name of this layout's window, or nullptr if this
+ layout does not represent a single window. */
+ virtual const char *get_name () const
+ {
+ return nullptr;
+ }
+
+ /* Adjust the size of the window named NAME to NEW_HEIGHT, updating
+ the sizes of the other windows around it. */
+ virtual bool adjust_size (const char *name, int new_height) = 0;
+
+ /* The most recent space allocation. */
+ int x = 0;
+ int y = 0;
+ int width = 0;
+ int height = 0;
+
+protected:
+
+ tui_layout_base () = default;
+};
+
+/* A TUI layout object that displays a single window. The window is
+ given by name. */
+class tui_layout_window : public tui_layout_base
+{
+public:
+
+ explicit tui_layout_window (const char *name)
+ : m_contents (name)
+ {
+ }
+
+ DISABLE_COPY_AND_ASSIGN (tui_layout_window);
+
+ std::unique_ptr<tui_layout_base> clone () const override;
+
+ void apply (int x, int y, int width, int height) override;
+
+ const char *get_name () const override
+ {
+ return m_contents.c_str ();
+ }
+
+ bool adjust_size (const char *name, int new_height) override
+ {
+ return false;
+ }
+
+ bool top_boxed_p () const override;
+
+ bool bottom_boxed_p () const override;
+
+protected:
+
+ void get_sizes (int *min_height, int *max_height) override;
+
+private:
+
+ /* Type of content to display. */
+ std::string m_contents;
+
+ /* When a layout is applied, this is updated to point to the window
+ object. */
+ tui_gen_win_info *m_window = nullptr;
+};
+
+/* A TUI layout that holds other layouts. */
+class tui_layout_split : public tui_layout_base
+{
+public:
+
+ tui_layout_split () = default;
+
+ DISABLE_COPY_AND_ASSIGN (tui_layout_split);
+
+ /* Add a new split layout to this layout. WEIGHT is the desired
+ size, which is relative to the other weights given in this
+ layout. */
+ tui_layout_split *add_split (int weight);
+
+ /* Add a new window to this layout. NAME is the name of the window
+ to add. WEIGHT is the desired size, which is relative to the
+ other weights given in this layout. */
+ void add_window (const char *name, int weight);
+
+ std::unique_ptr<tui_layout_base> clone () const override;
+
+ void apply (int x, int y, int width, int height) override;
+
+ bool adjust_size (const char *name, int new_height) override;
+
+ bool top_boxed_p () const override;
+
+ bool bottom_boxed_p () const override;
+
+protected:
+
+ void get_sizes (int *min_height, int *max_height) override;
+
+private:
+
+ /* Set the weights from the current heights. */
+ void set_weights_from_heights ();
+
+ struct split
+ {
+ /* The requested weight. */
+ int weight;
+ /* The layout. */
+ std::unique_ptr<tui_layout_base> layout;
+ };
+
+ /* The splits. */
+ std::vector<split> m_splits;
+
+ /* True if this layout has already been applied at least once. */
+ bool m_applied = false;
+};
+
extern void tui_add_win_to_layout (enum tui_win_type);
-extern int tui_default_win_height (enum tui_win_type,
- enum tui_layout_type);
-extern int tui_default_win_viewport_height (enum tui_win_type,
- enum tui_layout_type);
-extern enum tui_status tui_set_layout (enum tui_layout_type,
- enum tui_register_display_type);
-
-#endif /*TUI_LAYOUT_H */
+extern void tui_set_layout (enum tui_layout_type);
+
+/* Apply the current layout. */
+extern void tui_apply_current_layout ();
+
+/* Adjust the window height of WIN to NEW_HEIGHT. */
+extern void tui_adjust_window_height (struct tui_win_info *win,
+ int new_height);
+
+#endif /* TUI_TUI_LAYOUT_H */
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