[evince/wip/gpoo/gtk4-rebase-port: 7/89] libview: Port EvJobs to gtk4

[Germán Poo-Caamaño <gpoo src gnome org>]

commit c5e9d934063bec285ae4b983a351714521546807
Author: Qiu Wenbo <qiuwenbo kylinos com cn>
Date:   Mon Dec 6 16:04:10 2021 +0800

    libview: Port EvJobs to gtk4
    
    Signed-off-by: Qiu Wenbo <qiuwenbo kylinos com cn>

 libview/ev-jobs.c | 61 ++++++++++++++++++++++++++++++++++++++++++++-----------
 libview/ev-jobs.h | 12 +++++------
 2 files changed, 55 insertions(+), 18 deletions(-)
---
diff --git a/libview/ev-jobs.c b/libview/ev-jobs.c
index 8b54c8a83..8f73a5e11 100644
--- a/libview/ev-jobs.c
+++ b/libview/ev-jobs.c
@@ -602,13 +602,13 @@ ev_job_render_dispose (GObject *object)
 
        ev_debug_message (DEBUG_JOBS, "page: %d (%p)", job->page, job);
 
-       if (job->surface) {
-               cairo_surface_destroy (job->surface);
-               job->surface = NULL;
+       if (job->texture) {
+               g_object_unref (job->texture);
+               job->texture = NULL;
        }
 
        if (job->selection) {
-               cairo_surface_destroy (job->selection);
+               g_object_unref (job->selection);
                job->selection = NULL;
        }
 
@@ -620,12 +620,40 @@ ev_job_render_dispose (GObject *object)
        (* G_OBJECT_CLASS (ev_job_render_parent_class)->dispose) (object);
 }
 
+static GdkTexture *
+gdk_texture_new_for_surface(cairo_surface_t *surface)
+{
+        GdkTexture *texture;
+        GBytes *bytes;
+
+        g_return_val_if_fail(surface != NULL, NULL);
+        g_return_val_if_fail(cairo_surface_get_type(surface) == CAIRO_SURFACE_TYPE_IMAGE, NULL);
+        g_return_val_if_fail(cairo_image_surface_get_width(surface) > 0, NULL);
+        g_return_val_if_fail(cairo_image_surface_get_height(surface) > 0, NULL);
+
+        bytes = g_bytes_new_with_free_func(cairo_image_surface_get_data(surface),
+                                           cairo_image_surface_get_height(surface) * 
cairo_image_surface_get_stride(surface),
+                                           (GDestroyNotify)cairo_surface_destroy,
+                                           cairo_surface_reference(surface));
+
+        texture = gdk_memory_texture_new(cairo_image_surface_get_width(surface),
+                                         cairo_image_surface_get_height(surface),
+                                         GDK_MEMORY_DEFAULT,
+                                         bytes,
+                                         cairo_image_surface_get_stride(surface));
+
+        g_bytes_unref(bytes);
+
+        return texture;
+}
+
 static gboolean
 ev_job_render_run (EvJob *job)
 {
        EvJobRender     *job_render = EV_JOB_RENDER (job);
        EvPage          *ev_page;
        EvRenderContext *rc;
+       cairo_surface_t *surface, *selection = NULL;
 
        ev_debug_message (DEBUG_JOBS, "page: %d (%p)", job_render->page, job);
        ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job);
@@ -642,16 +670,16 @@ ev_job_render_run (EvJob *job)
                                           job_render->target_width, job_render->target_height);
        g_object_unref (ev_page);
 
-       job_render->surface = ev_document_render (job->document, rc);
+       surface = ev_document_render (job->document, rc);
 
-       if (job_render->surface == NULL ||
-           cairo_surface_status (job_render->surface) != CAIRO_STATUS_SUCCESS) {
+       if (surface == NULL ||
+           cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) {
                ev_document_fc_mutex_unlock ();
                ev_document_doc_mutex_unlock ();
                g_object_unref (rc);
 
-                if (job_render->surface != NULL) {
-                        cairo_status_t status = cairo_surface_status (job_render->surface);
+                if (surface != NULL) {
+                        cairo_status_t status = cairo_surface_status (surface);
                         ev_job_failed (job,
                                        EV_DOCUMENT_ERROR,
                                        EV_DOCUMENT_ERROR_INVALID,
@@ -666,9 +694,13 @@ ev_job_render_run (EvJob *job)
                                        job_render->page);
                 }
 
+               job_render->texture = NULL;
                return FALSE;
        }
 
+       job_render->texture = gdk_texture_new_for_surface (surface);
+       cairo_surface_destroy (surface);
+
        /* If job was cancelled during the page rendering,
         * we return now, so that the thread is finished ASAP
         */
@@ -683,7 +715,7 @@ ev_job_render_run (EvJob *job)
        if (job_render->include_selection && EV_IS_SELECTION (job->document)) {
                ev_selection_render_selection (EV_SELECTION (job->document),
                                               rc,
-                                              &(job_render->selection),
+                                              &selection,
                                               &(job_render->selection_points),
                                               NULL,
                                               job_render->selection_style,
@@ -693,6 +725,11 @@ ev_job_render_run (EvJob *job)
                                                           rc,
                                                           job_render->selection_style,
                                                           &(job_render->selection_points));
+
+               if (selection != NULL) {
+                       job_render->selection = gdk_texture_new_for_surface (selection);
+                       cairo_surface_destroy (selection);
+               }
        }
 
        g_object_unref (rc);
@@ -743,8 +780,8 @@ void
 ev_job_render_set_selection_info (EvJobRender     *job,
                                  EvRectangle     *selection_points,
                                  EvSelectionStyle selection_style,
-                                 GdkColor        *text,
-                                 GdkColor        *base)
+                                 GdkRGBA         *text,
+                                 GdkRGBA         *base)
 {
        job->include_selection = TRUE;
 
diff --git a/libview/ev-jobs.h b/libview/ev-jobs.h
index ae5bca2ef..67b96f179 100644
--- a/libview/ev-jobs.h
+++ b/libview/ev-jobs.h
@@ -285,15 +285,15 @@ struct _EvJobRender
        gboolean page_ready;
        gint target_width;
        gint target_height;
-       cairo_surface_t *surface;
+       GdkTexture *texture;
 
        gboolean include_selection;
-       cairo_surface_t *selection;
+       GdkTexture *selection;
        cairo_region_t *selection_region;
        EvRectangle selection_points;
        EvSelectionStyle selection_style;
-       GdkColor base;
-       GdkColor text;
+       GdkRGBA base;
+       GdkRGBA text;
 };
 
 struct _EvJobRenderClass
@@ -576,8 +576,8 @@ EV_PUBLIC
 void     ev_job_render_set_selection_info (EvJobRender     *job,
                                           EvRectangle     *selection_points,
                                           EvSelectionStyle selection_style,
-                                          GdkColor        *text,
-                                          GdkColor        *base);
+                                          GdkRGBA         *text,
+                                          GdkRGBA         *base);
 /* EvJobPageData */
 EV_PUBLIC
 GType           ev_job_page_data_get_type (void) G_GNUC_CONST;