#include "window.h"
#include "text-client-protocol.h"
+static const char *font_name = "sans-serif";
+static int font_size = 14;
+
+struct text_layout {
+ cairo_glyph_t *glyphs;
+ int num_glyphs;
+ cairo_text_cluster_t *clusters;
+ int num_clusters;
+ cairo_text_cluster_flags_t cluster_flags;
+ cairo_scaled_font_t *font;
+};
+
struct text_entry {
struct widget *widget;
struct window *window;
char *text;
int active;
+ uint32_t cursor;
+ uint32_t anchor;
+ char *preedit_text;
+ uint32_t preedit_cursor;
struct text_model *model;
+ struct text_layout *layout;
};
struct editor {
struct text_entry *editor;
};
-static void text_entry_redraw_handler(struct widget *widget, void *data);
-static void text_entry_button_handler(struct widget *widget,
- struct input *input, uint32_t time,
- uint32_t button,
- enum wl_pointer_button_state state, void *data);
+static struct text_layout *
+text_layout_create(void)
+{
+ struct text_layout *layout;
+ cairo_surface_t *surface;
+ cairo_t *cr;
+
+ layout = malloc(sizeof *layout);
+ if (!layout)
+ return NULL;
+
+ layout->glyphs = NULL;
+ layout->num_glyphs = 0;
+
+ layout->clusters = NULL;
+ layout->num_clusters = 0;
+
+ surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 0, 0);
+ cr = cairo_create(surface);
+ cairo_set_font_size(cr, font_size);
+ cairo_select_font_face(cr, font_name, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+ layout->font = cairo_get_scaled_font(cr);
+ cairo_scaled_font_reference(layout->font);
+
+ cairo_destroy(cr);
+ cairo_surface_destroy(surface);
+
+ return layout;
+}
+
+static void
+text_layout_destroy(struct text_layout *layout)
+{
+ if (layout->glyphs)
+ cairo_glyph_free(layout->glyphs);
+
+ if (layout->clusters)
+ cairo_text_cluster_free(layout->clusters);
+
+ cairo_scaled_font_destroy(layout->font);
+
+ free(layout);
+}
static void
-text_entry_append(struct text_entry *entry, const char *text)
+text_layout_set_text(struct text_layout *layout,
+ const char *text)
{
- entry->text = realloc(entry->text, strlen(entry->text) + strlen(text) + 1);
- strcat(entry->text, text);
+ if (layout->glyphs)
+ cairo_glyph_free(layout->glyphs);
+
+ if (layout->clusters)
+ cairo_text_cluster_free(layout->clusters);
+
+ layout->glyphs = NULL;
+ layout->num_glyphs = 0;
+ layout->clusters = NULL;
+ layout->num_clusters = 0;
+
+ cairo_scaled_font_text_to_glyphs(layout->font, 0, 0, text, -1,
+ &layout->glyphs, &layout->num_glyphs,
+ &layout->clusters, &layout->num_clusters,
+ &layout->cluster_flags);
}
+static void
+text_layout_draw(struct text_layout *layout, cairo_t *cr)
+{
+ cairo_save(cr);
+ cairo_set_scaled_font(cr, layout->font);
+ cairo_show_glyphs(cr, layout->glyphs, layout->num_glyphs);
+ cairo_restore(cr);
+}
+
+static void
+text_layout_extents(struct text_layout *layout, cairo_text_extents_t *extents)
+{
+ cairo_scaled_font_glyph_extents(layout->font,
+ layout->glyphs, layout->num_glyphs,
+ extents);
+}
+
+static int
+text_layout_xy_to_index(struct text_layout *layout, double x, double y)
+{
+ cairo_text_extents_t extents;
+ int i;
+ double d;
+
+ if (layout->num_glyphs == 0)
+ return 0;
+
+ cairo_scaled_font_glyph_extents(layout->font,
+ layout->glyphs, layout->num_glyphs,
+ &extents);
+
+ if (x < 0)
+ return 0;
+
+ for (i = 0; i < layout->num_glyphs - 1; ++i) {
+ d = layout->glyphs[i + 1].x - layout->glyphs[i].x;
+ if (x < layout->glyphs[i].x + d/2)
+ return i;
+ }
+
+ d = extents.width - layout->glyphs[layout->num_glyphs - 1].x;
+ if (x < layout->glyphs[layout->num_glyphs - 1].x + d/2)
+ return layout->num_glyphs - 1;
+
+ return layout->num_glyphs;
+}
+
+static void
+text_layout_index_to_pos(struct text_layout *layout, uint32_t index, cairo_rectangle_t *pos)
+{
+ cairo_text_extents_t extents;
+
+ if (!pos)
+ return;
+
+ cairo_scaled_font_glyph_extents(layout->font,
+ layout->glyphs, layout->num_glyphs,
+ &extents);
+
+ if ((int)index >= layout->num_glyphs) {
+ pos->x = extents.x_advance;
+ pos->y = layout->num_glyphs ? layout->glyphs[layout->num_glyphs - 1].y : 0;
+ pos->width = 1;
+ pos->height = extents.height;
+ return;
+ }
+
+ pos->x = layout->glyphs[index].x;
+ pos->y = layout->glyphs[index].y;
+ pos->width = (int)index < layout->num_glyphs - 1 ? layout->glyphs[index + 1].x : extents.x_advance - pos->x;
+ pos->height = extents.height;
+}
+
+static void
+text_layout_get_cursor_pos(struct text_layout *layout, int index, cairo_rectangle_t *pos)
+{
+ text_layout_index_to_pos(layout, index, pos);
+ pos->width = 1;
+}
+
+static void text_entry_redraw_handler(struct widget *widget, void *data);
+static void text_entry_button_handler(struct widget *widget,
+ struct input *input, uint32_t time,
+ uint32_t button,
+ enum wl_pointer_button_state state, void *data);
+static void text_entry_insert_at_cursor(struct text_entry *entry, const char *text);
+static void text_entry_set_preedit(struct text_entry *entry,
+ const char *preedit_text,
+ int preedit_cursor);
+static void text_entry_delete_text(struct text_entry *entry,
+ uint32_t index, uint32_t length);
+static void text_entry_delete_selected_text(struct text_entry *entry);
static void
text_model_commit_string(void *data,
{
struct text_entry *entry = data;
- text_entry_append(entry, text);
+ if (index > strlen(text))
+ fprintf(stderr, "Invalid cursor index %d\n", index);
+
+ text_entry_delete_selected_text(entry);
+ text_entry_insert_at_cursor(entry, text);
widget_schedule_redraw(entry->widget);
}
const char *text,
uint32_t index)
{
+ struct text_entry *entry = data;
+
+ if (index > strlen(text)) {
+ fprintf(stderr, "Invalid cursor index %d\n", index);
+ index = strlen(text);
+ }
+
+ text_entry_delete_selected_text(entry);
+ text_entry_set_preedit(entry, text, index);
+
+ widget_schedule_redraw(entry->widget);
+}
+
+static void
+text_model_delete_surrounding_text(void *data,
+ struct text_model *text_model,
+ int32_t index,
+ uint32_t length)
+{
+ struct text_entry *entry = data;
+ uint32_t cursor_index = index + entry->cursor;
+
+ if (cursor_index > strlen(entry->text)) {
+ fprintf(stderr, "Invalid cursor index %d\n", index);
+ return;
+ }
+
+ if (cursor_index + length > strlen(entry->text)) {
+ fprintf(stderr, "Invalid length %d\n", length);
+ return;
+ }
+
+ if (length == 0)
+ return;
+
+ text_entry_delete_text(entry, cursor_index, length);
}
static void
static void
text_model_key(void *data,
- struct text_model *text_model)
+ struct text_model *text_model,
+ uint32_t key,
+ uint32_t state)
{
+ struct text_entry *entry = data;
+ const char *state_label;
+ const char *key_label = "released";
+
+ if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
+ state_label = "pressed";
+ }
+
+ switch (key) {
+ case XKB_KEY_Tab:
+ key_label = "Tab";
+ break;
+ case XKB_KEY_KP_Enter:
+ key_label = "Enter";
+ break;
+ case XKB_KEY_Left:
+ if (entry->cursor > 0) {
+ entry->cursor--;
+ entry->anchor = entry->cursor;
+ widget_schedule_redraw(entry->widget);
+ }
+ break;
+ case XKB_KEY_Right:
+ if (entry->cursor < strlen(entry->text)) {
+ entry->cursor++;
+ entry->anchor = entry->cursor;
+ widget_schedule_redraw(entry->widget);
+ }
+ break;
+ default:
+ key_label = "Unknown";
+ }
+
+ fprintf(stderr, "%s key was %s.\n", key_label, state_label);
}
static void
}
static void
-text_model_activated(void *data,
- struct text_model *text_model)
+text_model_enter(void *data,
+ struct text_model *text_model,
+ struct wl_surface *surface)
{
struct text_entry *entry = data;
+ if (surface != window_get_wl_surface(entry->window))
+ return;
+
entry->active = 1;
widget_schedule_redraw(entry->widget);
}
static void
-text_model_deactivated(void *data,
- struct text_model *text_model)
+text_model_leave(void *data,
+ struct text_model *text_model)
{
struct text_entry *entry = data;
static const struct text_model_listener text_model_listener = {
text_model_commit_string,
text_model_preedit_string,
+ text_model_delete_surrounding_text,
text_model_preedit_styling,
text_model_key,
text_model_selection_replacement,
text_model_direction,
text_model_locale,
- text_model_activated,
- text_model_deactivated
+ text_model_enter,
+ text_model_leave
};
static struct text_entry*
entry->window = editor->window;
entry->text = strdup(text);
entry->active = 0;
+ entry->cursor = strlen(text);
+ entry->anchor = entry->cursor;
+ entry->preedit_text = NULL;
+ entry->preedit_cursor = 0;
entry->model = text_model_factory_create_text_model(editor->text_model_factory);
text_model_add_listener(entry->model, &text_model_listener, entry);
+ entry->layout = text_layout_create();
+ text_layout_set_text(entry->layout, entry->text);
+
widget_set_redraw_handler(entry->widget, text_entry_redraw_handler);
widget_set_button_handler(entry->widget, text_entry_button_handler);
{
widget_destroy(entry->widget);
text_model_destroy(entry->model);
+ text_layout_destroy(entry->layout);
free(entry->text);
free(entry);
}
}
static void
+text_entry_update_layout(struct text_entry *entry)
+{
+ char *text;
+
+ assert(((unsigned int)entry->cursor) <= strlen(entry->text) +
+ (entry->preedit_text ? strlen(entry->preedit_text) : 0));
+
+ if (!entry->preedit_text) {
+ text_layout_set_text(entry->layout, entry->text);
+ return;
+ }
+
+ text = malloc(strlen(entry->text) + strlen(entry->preedit_text) + 1);
+ strncpy(text, entry->text, entry->cursor);
+ strcpy(text + entry->cursor, entry->preedit_text);
+ strcpy(text + entry->cursor + strlen(entry->preedit_text),
+ entry->text + entry->cursor);
+
+ text_layout_set_text(entry->layout, text);
+ free(text);
+
+ widget_schedule_redraw(entry->widget);
+
+ text_model_set_surrounding_text(entry->model,
+ entry->text,
+ entry->cursor,
+ entry->anchor);
+}
+
+static void
+text_entry_insert_at_cursor(struct text_entry *entry, const char *text)
+{
+ char *new_text = malloc(strlen(entry->text) + strlen(text) + 1);
+
+ strncpy(new_text, entry->text, entry->cursor);
+ strcpy(new_text + entry->cursor, text);
+ strcpy(new_text + entry->cursor + strlen(text),
+ entry->text + entry->cursor);
+
+ free(entry->text);
+ entry->text = new_text;
+ entry->cursor += strlen(text);
+ entry->anchor += strlen(text);
+
+ text_entry_update_layout(entry);
+}
+
+static void
+text_entry_set_preedit(struct text_entry *entry,
+ const char *preedit_text,
+ int preedit_cursor)
+{
+ if (entry->preedit_text) {
+ free(entry->preedit_text);
+ entry->preedit_text = NULL;
+ entry->preedit_cursor = 0;
+ }
+
+ if (!preedit_text)
+ return;
+
+ entry->preedit_text = strdup(preedit_text);
+ entry->preedit_cursor = preedit_cursor;
+
+ text_entry_update_layout(entry);
+}
+
+static void
+text_entry_set_cursor_position(struct text_entry *entry,
+ int32_t x, int32_t y)
+{
+ entry->cursor = text_layout_xy_to_index(entry->layout, x, y);
+
+ text_model_reset(entry->model);
+
+ if (entry->cursor >= entry->preedit_cursor) {
+ entry->cursor -= entry->preedit_cursor;
+ }
+
+ text_entry_update_layout(entry);
+
+ widget_schedule_redraw(entry->widget);
+}
+
+static void
+text_entry_set_anchor_position(struct text_entry *entry,
+ int32_t x, int32_t y)
+{
+ entry->anchor = text_layout_xy_to_index(entry->layout, x, y);
+
+ widget_schedule_redraw(entry->widget);
+}
+
+static void
+text_entry_delete_text(struct text_entry *entry,
+ uint32_t index, uint32_t length)
+{
+ if (entry->cursor > index)
+ entry->cursor -= length;
+
+ entry->anchor = entry->cursor;
+
+ entry->text[index] = '\0';
+ strcat(entry->text, entry->text + index + length);
+
+ text_entry_update_layout(entry);
+
+ widget_schedule_redraw(entry->widget);
+}
+
+static void
+text_entry_delete_selected_text(struct text_entry *entry)
+{
+ uint32_t start_index = entry->anchor < entry->cursor ? entry->anchor : entry->cursor;
+ uint32_t end_index = entry->anchor < entry->cursor ? entry->cursor : entry->anchor;
+
+ if (entry->anchor == entry->cursor)
+ return;
+
+ text_entry_delete_text(entry, start_index, end_index - start_index);
+
+ entry->anchor = entry->cursor;
+}
+
+static void
+text_entry_draw_selection(struct text_entry *entry, cairo_t *cr)
+{
+ cairo_text_extents_t extents;
+ uint32_t start_index = entry->anchor < entry->cursor ? entry->anchor : entry->cursor;
+ uint32_t end_index = entry->anchor < entry->cursor ? entry->cursor : entry->anchor;
+ cairo_rectangle_t start;
+ cairo_rectangle_t end;
+
+ if (entry->anchor == entry->cursor)
+ return;
+
+ text_layout_extents(entry->layout, &extents);
+
+ text_layout_index_to_pos(entry->layout, start_index, &start);
+ text_layout_index_to_pos(entry->layout, end_index, &end);
+
+ cairo_save (cr);
+
+ cairo_set_source_rgba(cr, 0.3, 0.3, 1.0, 0.5);
+ cairo_rectangle(cr,
+ start.x, extents.y_bearing + extents.height + 2,
+ end.x - start.x, -extents.height - 4);
+ cairo_fill(cr);
+
+ cairo_rectangle(cr,
+ start.x, extents.y_bearing + extents.height,
+ end.x - start.x, -extents.height);
+ cairo_clip(cr);
+ cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
+ text_layout_draw(entry->layout, cr);
+
+ cairo_restore (cr);
+}
+
+static void
+text_entry_draw_cursor(struct text_entry *entry, cairo_t *cr)
+{
+ cairo_text_extents_t extents;
+ cairo_rectangle_t cursor_pos;
+
+ text_layout_extents(entry->layout, &extents);
+ text_layout_get_cursor_pos(entry->layout,
+ entry->cursor + entry->preedit_cursor,
+ &cursor_pos);
+
+ cairo_set_line_width(cr, 1.0);
+ cairo_move_to(cr, cursor_pos.x, extents.y_bearing + extents.height + 2);
+ cairo_line_to(cr, cursor_pos.x, extents.y_bearing - 2);
+ cairo_stroke(cr);
+}
+
+static void
+text_entry_draw_preedit(struct text_entry *entry, cairo_t *cr)
+{
+ cairo_text_extents_t extents;
+ cairo_rectangle_t start;
+ cairo_rectangle_t end;
+
+ if (!entry->preedit_text)
+ return;
+
+ text_layout_extents(entry->layout, &extents);
+
+ text_layout_index_to_pos(entry->layout, entry->cursor, &start);
+ text_layout_index_to_pos(entry->layout,
+ entry->cursor + strlen(entry->preedit_text),
+ &end);
+
+ cairo_save (cr);
+
+ cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
+ cairo_rectangle(cr,
+ start.x, 0,
+ end.x - start.x, 1);
+ cairo_fill(cr);
+
+ cairo_restore (cr);
+}
+
+static const int text_offset_left = 10;
+
+static void
text_entry_redraw_handler(struct widget *widget, void *data)
{
struct text_entry *entry = data;
}
cairo_set_source_rgba(cr, 0, 0, 0, 1);
- cairo_select_font_face(cr, "sans",
- CAIRO_FONT_SLANT_NORMAL,
- CAIRO_FONT_WEIGHT_BOLD);
- cairo_set_font_size(cr, 14);
- cairo_translate(cr, 10, allocation.height / 2);
- cairo_show_text(cr, entry->text);
+ cairo_translate(cr, text_offset_left, allocation.height / 2);
+ text_layout_draw(entry->layout, cr);
+
+ text_entry_draw_selection(entry, cr);
+
+ text_entry_draw_cursor(entry, cr);
+
+ text_entry_draw_preedit(entry, cr);
+
cairo_pop_group_to_source(cr);
cairo_paint(cr);
cairo_surface_destroy(surface);
}
+static int
+text_entry_motion_handler(struct widget *widget,
+ struct input *input, uint32_t time,
+ float x, float y, void *data)
+{
+ struct text_entry *entry = data;
+ struct rectangle allocation;
+
+ widget_get_allocation(entry->widget, &allocation);
+
+ text_entry_set_cursor_position(entry,
+ x - allocation.x - text_offset_left,
+ y - allocation.y - text_offset_left);
+
+ return CURSOR_IBEAM;
+}
+
static void
text_entry_button_handler(struct widget *widget,
struct input *input, uint32_t time,
enum wl_pointer_button_state state, void *data)
{
struct text_entry *entry = data;
+ struct rectangle allocation;
+ int32_t x, y;
+
+ widget_get_allocation(entry->widget, &allocation);
+ input_get_position(input, &x, &y);
if (button != BTN_LEFT) {
return;
}
+ text_entry_set_cursor_position(entry,
+ x - allocation.x - text_offset_left,
+ y - allocation.y - text_offset_left);
+
if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
struct wl_seat *seat = input_get_seat(input);
text_entry_activate(entry, seat);
+
+ text_entry_set_anchor_position(entry,
+ x - allocation.x - text_offset_left,
+ y - allocation.y - text_offset_left);
+
+ widget_set_motion_handler(entry->widget, text_entry_motion_handler);
+ } else {
+ widget_set_motion_handler(entry->widget, NULL);
}
}
}
static void
-global_handler(struct wl_display *display, uint32_t id,
+global_handler(struct display *display, uint32_t name,
const char *interface, uint32_t version, void *data)
{
struct editor *editor = data;
if (!strcmp(interface, "text_model_factory")) {
- editor->text_model_factory = wl_display_bind(display, id,
- &text_model_factory_interface);
+ editor->text_model_factory =
+ display_bind(display, name,
+ &text_model_factory_interface, 1);
}
}
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
- wl_display_add_global_listener(display_get_display(editor.display),
- global_handler, &editor);
+ display_set_user_data(editor.display, &editor);
+ display_set_global_handler(editor.display, global_handler);
editor.window = window_create(editor.display);
editor.widget = frame_create(editor.window, &editor);
editor.entry = text_entry_create(&editor, "Entry");
editor.editor = text_entry_create(&editor, "Editor");
+ text_entry_set_preedit(editor.editor, "preedit", strlen("preedit"));
window_set_title(editor.window, "Text Editor");
projects / profile / ivi / weston.git / blobdiff