Changes in uspace/lib/ui/src/ui.c [3d10a2f:899bdfd] in mainline

File:

• uspace/lib/ui/src/ui.c (modified) (18 diffs)

uspace/lib/ui/src/ui.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2021 Jiri Svoboda
+ * Copyright (c) 2023 Jiri Svoboda
  * All rights reserved.
  *
@@ -39 +39 @@
 #include <errno.h>
 #include <fibril.h>
+#include <fibril_synch.h>
 #include <gfx/color.h>
+#include <gfx/cursor.h>
 #include <gfx/render.h>
 #include <io/console.h>
@@ -46 +48 @@
 #include <str.h>
 #include <task.h>
+#include <types/common.h>
+#include <ui/clickmatic.h>
 #include <ui/ui.h>
 #include <ui/wdecor.h>
 #include <ui/window.h>
+#include "../private/wdecor.h"
 #include "../private/window.h"
 #include "../private/ui.h"
@@ -61 +66 @@
  * @param ws Place to store window system type (protocol)
  * @param osvc Place to store pointer to output service name
- */
-static void ui_ospec_parse(const char *ospec, ui_winsys_t *ws,
-    const char **osvc)
+ * @param ridev_id Place to store input device ID
+ * @return EOK on success, EINVAL if syntax is invalid, ENOMEM if out of
+ *         memory
+ */
+static errno_t ui_ospec_parse(const char *ospec, ui_winsys_t *ws,
+    char **osvc, sysarg_t *ridev_id)
 {
         const char *cp;
-
-        if (ospec == UI_DISPLAY_DEFAULT) {
-                *ws = ui_ws_display;
-                *osvc = DISPLAY_DEFAULT;
-                return;
-        }
+        const char *qm;
+        const char *endptr;
+        uint64_t idev_id;
+        errno_t rc;
+
+        *ridev_id = 0;
 
         cp = ospec;
@@ -77 +85 @@
                 ++cp;
 
+        /* Window system / protocol */
         if (*cp == '@') {
                 if (str_lcmp(ospec, "disp@", str_length("disp@")) == 0) {
@@ -84 +93 @@
                 } else if (str_lcmp(ospec, "null@", str_length("null@")) == 0) {
                         *ws = ui_ws_null;
+                } else if (str_lcmp(ospec, "@", str_length("@")) == 0) {
+                        *ws = ui_ws_any;
                 } else {
                         *ws = ui_ws_unknown;
                 }
 
-                if (cp[1] != '\0')
-                        *osvc = cp + 1;
-                else
-                        *osvc = NULL;
+                ++cp;
         } else {
                 *ws = ui_ws_display;
-                *osvc = ospec;
-        }
+        }
+
+        /* Output service is the part before question mark */
+        qm = str_chr(cp, '?');
+        if (qm != NULL) {
+                *osvc = str_ndup(cp, qm - cp);
+        } else {
+                /* No question mark */
+                *osvc = str_dup(cp);
+        }
+
+        if (*osvc == NULL)
+                return ENOMEM;
+
+        if (qm != NULL) {
+                /* The part after the question mark */
+                cp = qm + 1;
+
+                /* Input device ID parameter */
+                if (str_lcmp(cp, "idev=", str_length("idev=")) == 0) {
+                        cp += str_length("idev=");
+
+                        rc = str_uint64_t(cp, &endptr, 10, false, &idev_id);
+                        if (rc != EOK)
+                                goto error;
+
+                        *ridev_id = idev_id;
+                        cp = endptr;
+                }
+        }
+
+        if (*cp != '\0') {
+                rc = EINVAL;
+                goto error;
+        }
+
+        return EOK;
+error:
+        free(*osvc);
+        *osvc = NULL;
+        return rc;
 }
 
@@ -114 +161 @@
         console_gc_t *cgc;
         ui_winsys_t ws;
-        const char *osvc;
+        char *osvc;
         sysarg_t cols;
         sysarg_t rows;
+        sysarg_t idev_id;
         ui_t *ui;
 
-        ui_ospec_parse(ospec, &ws, &osvc);
-
-        if (ws == ui_ws_display) {
-                rc = display_open(osvc, &display);
+        rc = ui_ospec_parse(ospec, &ws, &osvc, &idev_id);
+        if (rc != EOK)
+                return rc;
+
+        if (ws == ui_ws_display || ws == ui_ws_any) {
+                rc = display_open((str_cmp(osvc, "") != 0) ? osvc :
+                    DISPLAY_DEFAULT, &display);
                 if (rc != EOK)
-                        return rc;
+                        goto disp_fail;
 
                 rc = ui_create_disp(display, &ui);
                 if (rc != EOK) {
                         display_close(display);
-                        return rc;
-                }
-        } else if (ws == ui_ws_console) {
+                        goto disp_fail;
+                }
+
+                free(osvc);
+                ui->myoutput = true;
+                ui->idev_id = idev_id;
+                *rui = ui;
+                return EOK;
+        }
+
+disp_fail:
+        if (ws == ui_ws_console || ws == ui_ws_any) {
                 console = console_init(stdin, stdout);
                 if (console == NULL)
-                        return EIO;
+                        goto cons_fail;
 
                 rc = console_get_size(console, &cols, &rows);
                 if (rc != EOK) {
                         console_done(console);
-                        return rc;
+                        goto cons_fail;
                 }
 
@@ -148 +208 @@
                 if (rc != EOK) {
                         console_done(console);
-                        return rc;
+                        goto cons_fail;
                 }
 
@@ -155 +215 @@
                         ui_destroy(ui);
                         console_done(console);
-                        return rc;
-                }
+                        goto cons_fail;
+                }
+
+                free(osvc);
 
                 ui->cgc = cgc;
@@ -165 +227 @@
 
                 (void) ui_paint(ui);
-        } else if (ws == ui_ws_null) {
+                ui->myoutput = true;
+                *rui = ui;
+                return EOK;
+        }
+
+cons_fail:
+        if (ws == ui_ws_null) {
+                free(osvc);
                 rc = ui_create_disp(NULL, &ui);
                 if (rc != EOK)
                         return rc;
-        } else {
-                return EINVAL;
-        }
-
-        ui->myoutput = true;
-        *rui = ui;
-        return EOK;
+
+                ui->myoutput = true;
+                *rui = ui;
+                return EOK;
+        }
+
+        free(osvc);
+        return EINVAL;
 }
 
@@ -186 +256 @@
 {
         ui_t *ui;
+        errno_t rc;
 
         ui = calloc(1, sizeof(ui_t));
@@ -191 +262 @@
                 return ENOMEM;
 
+        rc = ui_clickmatic_create(ui, &ui->clickmatic);
+        if (rc != EOK) {
+                free(ui);
+                return rc;
+        }
+
         ui->console = console;
         list_initialize(&ui->windows);
+        fibril_mutex_initialize(&ui->lock);
         *rui = ui;
         return EOK;
@@ -206 +284 @@
 {
         ui_t *ui;
+        errno_t rc;
 
         ui = calloc(1, sizeof(ui_t));
@@ -211 +290 @@
                 return ENOMEM;
 
+        rc = ui_clickmatic_create(ui, &ui->clickmatic);
+        if (rc != EOK) {
+                free(ui);
+                return rc;
+        }
+
         ui->display = disp;
         list_initialize(&ui->windows);
+        fibril_mutex_initialize(&ui->lock);
         *rui = ui;
         return EOK;
@@ -252 +338 @@
         switch (event->type) {
         case CEV_KEY:
+                ui_lock(ui);
                 ui_window_send_kbd(awnd, &event->ev.key);
+                ui_unlock(ui);
                 break;
         case CEV_POS:
@@ -262 +350 @@
                 claim = ui_wdecor_pos_event(awnd->wdecor, &pos);
                 /* Note: If event is claimed, awnd might not be valid anymore */
-                if (claim == ui_unclaimed)
+                if (claim == ui_unclaimed) {
+                        ui_lock(ui);
                         ui_window_send_pos(awnd, &pos);
-
+                        ui_unlock(ui);
+                }
+
+                break;
+        case CEV_RESIZE:
+                ui_lock(ui);
+                ui_window_send_resize(awnd);
+                ui_unlock(ui);
                 break;
         }
@@ -355 +451 @@
 }
 
+/** Free up console for other users.
+ *
+ * Release console resources for another application (that the current
+ * task is starting). After the other application finishes, resume
+ * operation with ui_resume(). No calls to UI must happen inbetween
+ * and no events must be processed (i.e. the calling function must not
+ * return control to UI.
+ *
+ * @param ui UI
+ * @return EOK on success or an error code
+ */
+errno_t ui_suspend(ui_t *ui)
+{
+        errno_t rc;
+
+        assert(!ui->suspended);
+
+        if (ui->cgc == NULL) {
+                ui->suspended = true;
+                return EOK;
+        }
+
+        (void) console_set_caption(ui->console, "");
+        rc = console_gc_suspend(ui->cgc);
+        if (rc != EOK)
+                return rc;
+
+        ui->suspended = true;
+        return EOK;
+}
+
+/** Resume suspended UI.
+ *
+ * Reclaim console resources (after child application has finished running)
+ * and restore UI operation previously suspended by calling ui_suspend().
+ *
+ * @param ui UI
+ * @return EOK on success or an error code
+ */
+errno_t ui_resume(ui_t *ui)
+{
+        errno_t rc;
+        ui_window_t *awnd;
+        sysarg_t col;
+        sysarg_t row;
+        cons_event_t ev;
+
+        assert(ui->suspended);
+
+        if (ui->cgc == NULL) {
+                ui->suspended = false;
+                return EOK;
+        }
+
+        rc = console_get_pos(ui->console, &col, &row);
+        if (rc != EOK)
+                return rc;
+
+        /*
+         * Here's a little heuristic to help determine if we need
+         * to pause before returning to the UI. If we are in the
+         * top-left corner, chances are the screen is empty and
+         * there is no need to pause.
+         */
+        if (col != 0 || row != 0) {
+                printf("Press any key or button to continue...\n");
+
+                while (true) {
+                        rc = console_get_event(ui->console, &ev);
+                        if (rc != EOK)
+                                return EIO;
+
+                        if (ev.type == CEV_KEY && ev.ev.key.type == KEY_PRESS)
+                                break;
+
+                        if (ev.type == CEV_POS && ev.ev.pos.type == POS_PRESS)
+                                break;
+                }
+        }
+
+        rc = console_gc_resume(ui->cgc);
+        if (rc != EOK)
+                return rc;
+
+        ui->suspended = false;
+
+        awnd = ui_window_get_active(ui);
+        if (awnd != NULL)
+                (void) console_set_caption(ui->console, awnd->wdecor->caption);
+
+        rc = gfx_cursor_set_visible(console_gc_get_ctx(ui->cgc), false);
+        if (rc != EOK)
+                return rc;
+
+        return EOK;
+}
+
+/** Determine if UI is suspended.
+ *
+ * @param ui UI
+ * @return @c true iff UI is suspended
+ */
+bool ui_is_suspended(ui_t *ui)
+{
+        return ui->suspended;
+}
+
+/** Lock UI.
+ *
+ * Block UI from calling window callbacks. @c ui_lock() and @c ui_unlock()
+ * must be used when accessing UI resources from a fibril (as opposed to
+ * from a window callback).
+ *
+ * @param ui UI
+ */
+void ui_lock(ui_t *ui)
+{
+        fibril_mutex_lock(&ui->lock);
+}
+
+/** Unlock UI.
+ *
+ * Allow UI to call window callbacks. @c ui_lock() and @c ui_unlock()
+ * must be used when accessing window resources from a fibril (as opposed to
+ * from a window callback).
+ *
+ * @param ui UI
+ */
+void ui_unlock(ui_t *ui)
+{
+        fibril_mutex_unlock(&ui->lock);
+}
+
 /** Terminate user interface.
  *
@@ -392 +621 @@
 }
 
+/** Get UI screen rectangle.
+ *
+ * @param ui User interface
+ * @param rect Place to store bounding rectangle
+ */
+errno_t ui_get_rect(ui_t *ui, gfx_rect_t *rect)
+{
+        display_info_t info;
+        sysarg_t cols, rows;
+        errno_t rc;
+
+        if (ui->display != NULL) {
+                rc = display_get_info(ui->display, &info);
+                if (rc != EOK)
+                        return rc;
+
+                *rect = info.rect;
+        } else if (ui->console != NULL) {
+                rc = console_get_size(ui->console, &cols, &rows);
+                if (rc != EOK)
+                        return rc;
+
+                rect->p0.x = 0;
+                rect->p0.y = 0;
+                rect->p1.x = cols;
+                rect->p1.y = rows;
+        } else {
+                return ENOTSUP;
+        }
+
+        return EOK;
+}
+
+/** Get clickmatic from UI.
+ *
+ * @pararm ui UI
+ * @return Clickmatic
+ */
+ui_clickmatic_t *ui_get_clickmatic(ui_t *ui)
+{
+        return ui->clickmatic;
+}
+
 /** @}
  */