Added partial matching and introduced threads

1 files changed, 62 insertions, 0 deletions

diff --git a/examples/dte/view.h b/examples/dte/view.h
new file mode 100644
index 0000000..c7bb254
--- /dev/null
+++ b/examples/dte/view.h
@@ -0,0 +1,62 @@
+#ifndef VIEW_H
+#define VIEW_H
+
+#include <limits.h>
+#include <stdbool.h>
+#include <sys/types.h>
+#include "block-iter.h"
+#include "util/macros.h"
+#include "util/string-view.h"
+
+typedef enum {
+    SELECT_NONE,
+    SELECT_CHARS,
+    SELECT_LINES,
+} SelectionType;
+
+// A view into a Buffer, with its own cursor position and selection.
+// Visually speaking, each tab in a Window corresponds to a View.
+typedef struct View {
+    struct Buffer *buffer;
+    struct Window *window;
+    BlockIter cursor;
+    long cx, cy; // Cursor position
+    long cx_display; // Visual cursor x (char widths: wide 2, tab 1-8, control 2, invalid char 4)
+    long cx_char; // Cursor x in characters (invalid UTF-8 character (byte) is 1 char)
+    long vx, vy; // Top left corner
+    long preferred_x; // Preferred cursor x (preferred value for cx_display)
+    int tt_width; // Tab title width
+    int tt_truncated_width;
+    bool center_on_scroll; // Center view to cursor if scrolled
+    bool force_center; // Force centering view to cursor
+
+    SelectionType selection;
+    SelectionType select_mode;
+    ssize_t sel_so; // Cursor offset when selection was started
+    ssize_t sel_eo; // See `SEL_EO_RECALC` below
+
+    // Used to save cursor state when multiple views share same buffer
+    bool restore_cursor;
+    size_t saved_cursor_offset;
+} View;
+
+// If View::sel_eo is set to this value it means the offset must
+// be calculated from the cursor iterator. Otherwise the offset
+// is precalculated and may not be the same as the cursor position
+// (see search/replace code).
+#define SEL_EO_RECALC SSIZE_MAX
+
+static inline void view_reset_preferred_x(View *view)
+{
+    view->preferred_x = -1;
+}
+
+void view_update_cursor_y(View *view) NONNULL_ARGS;
+void view_update_cursor_x(View *view) NONNULL_ARGS;
+void view_update(View *view, unsigned int scroll_margin) NONNULL_ARGS;
+long view_get_preferred_x(View *view) NONNULL_ARGS;
+bool view_can_close(const View *view) NONNULL_ARGS;
+StringView view_do_get_word_under_cursor(const View *view, size_t *offset_in_line) NONNULL_ARGS;
+StringView view_get_word_under_cursor(const View *view) NONNULL_ARGS;
+
+#endif