commit f5233ebb7beef2ef76779a5cb86b1577c58d2e44
parent e0d9f8411a6a7026bc6284e9b91e6a2a5a0f8dc2
Author: Michael Rasmussen <mir@datanom.net>
Date: Wed, 7 Nov 2018 03:20:11 +0100
Implement image handling
Signed-off-by: Michael Rasmussen <mir@datanom.net>
Diffstat:
5 files changed, 142 insertions(+), 3 deletions(-)
diff --git a/src/plugins/litehtml_viewer/Makefile.am b/src/plugins/litehtml_viewer/Makefile.am
@@ -53,14 +53,16 @@ litehtml_viewer_la_LDFLAGS = \
-avoid-version -module \
$(GTK_LIBS) \
$(FONTCONFIG_LIBS) \
- $(CAIRO_LIBS)
+ $(CAIRO_LIBS) \
+ $(CURL_LIBS)
litehtml_viewer_la_CPPFLAGS = \
$(IFLAGS) \
$(GLIB_CFLAGS) \
$(GTK_CFLAGS) \
$(FONTCONFIG_CFLAGS) \
- $(CAIRO_CFLAGS)
+ $(CAIRO_CFLAGS) \
+ $(CURL_FLAGS)
.PHONY: test
diff --git a/src/plugins/litehtml_viewer/TODO b/src/plugins/litehtml_viewer/TODO
@@ -2,3 +2,6 @@
- Add support for printing
- Add support for links (open in default browser)
+Images:
+https://developer.gnome.org/gio/unstable/GMemoryInputStream.html#g-memory-input-stream-new-from-data
+http://darcs.cielonegro.org/gtktwitter/gtktwitter.c
diff --git a/src/plugins/litehtml_viewer/lh_viewer.c b/src/plugins/litehtml_viewer/lh_viewer.c
@@ -23,6 +23,7 @@
#endif
#include <codeconv.h>
+#include "common/utils.h"
#include "lh_viewer.h"
static gchar *content_types[] = { "text/html", NULL };
diff --git a/src/plugins/litehtml_viewer/lh_widget.cpp b/src/plugins/litehtml_viewer/lh_widget.cpp
@@ -22,6 +22,12 @@
#include "claws-features.h"
#endif
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <curl/curl.h>
#include "lh_widget.h"
#include "lh_widget_wrapped.h"
@@ -29,10 +35,19 @@ char master_css[] = {
#include "css.inc"
};
+/**
+ * curl callback
+ */
+static char* response_mime = NULL; /* response content-type. ex: "text/html" */
+static char* response_data = NULL; /* response data from server. */
+static size_t response_size = 0; /* response size of data */
+
static gboolean expose_event_cb(GtkWidget *widget, GdkEvent *event,
gpointer user_data);
static void size_allocate_cb(GtkWidget *widget, GdkRectangle *allocation,
gpointer user_data);
+static size_t handle_returned_data(char* ptr, size_t size, size_t nmemb, void* stream);
+static size_t handle_returned_header(void* ptr, size_t size, size_t nmemb, void* stream);
lh_widget::lh_widget()
{
@@ -61,6 +76,7 @@ lh_widget::lh_widget()
m_html = NULL;
m_rendered_width = 0;
m_context.load_master_stylesheet(master_css);
+ stream = NULL;
}
lh_widget::~lh_widget()
@@ -70,6 +86,10 @@ lh_widget::~lh_widget()
g_object_unref(m_scrolled_window);
m_scrolled_window = NULL;
m_html = NULL;
+ if (stream) {
+ g_input_stream_close(stream, NULL, NULL);
+ stream = NULL;
+ }
}
GtkWidget *lh_widget::get_widget() const
@@ -124,7 +144,34 @@ void lh_widget::get_client_rect(litehtml::position& client) const
GdkPixbuf *lh_widget::get_image(const litehtml::tchar_t* url, bool redraw_on_ready)
{
- return NULL;
+ GError *error = NULL;
+ GdkPixbuf *pixbuf = NULL;
+
+ g_log(NULL, G_LOG_LEVEL_MESSAGE, "Loading... %s", url);
+
+ GInputStream *image = load_url(url, &error);
+ if (error) {
+ g_log(NULL, G_LOG_LEVEL_MESSAGE, "Error: %s", error->message);
+ g_error_free(error);
+ return NULL;
+ }
+
+ GdkPixbufLoader* loader = gdk_pixbuf_loader_new();
+ if (gdk_pixbuf_loader_write(loader, (const guchar*)response_data, response_size, &error)) {
+ pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
+ } else {
+ g_log(NULL, G_LOG_LEVEL_ERROR, "lh_widget::get_image: Could not create pixbuf");
+ }
+ gdk_pixbuf_loader_close(loader, NULL);
+
+ /* cleanup callback data */
+ if (response_mime) g_free(response_mime);
+ if (response_data) g_free(response_data);
+ response_data = NULL;
+ response_mime = NULL;
+ response_size = 0;
+
+ return pixbuf;
}
void lh_widget::open_html(const gchar *contents)
@@ -235,6 +282,58 @@ void lh_widget::clear()
m_rendered_width = 0;
}
+GInputStream *lh_widget::load_url(const gchar *url, GError **error)
+{
+ GError* _error = NULL;
+ CURL* curl = NULL;
+ CURLcode res = CURLE_OK;
+ gsize len;
+ gchar* content;
+
+ /* initialize callback data */
+ response_mime = NULL;
+ response_data = NULL;
+ response_size = 0;
+ if (stream) {
+ g_input_stream_close(stream, NULL, &_error);
+ if (_error) {
+ if (error) *error = _error;
+ return NULL;
+ }
+ }
+
+ stream = NULL;
+
+ if (!strncmp(url, "file:///", 8) || g_file_test(url, G_FILE_TEST_EXISTS)) {
+ gchar* newurl = g_filename_from_uri(url, NULL, NULL);
+ if (g_file_get_contents(newurl ? newurl : url, &content, &len, &_error)) {
+ stream = g_memory_input_stream_new_from_data(content, len, g_free);
+ } else {
+ g_log(NULL, G_LOG_LEVEL_MESSAGE, "%s", _error->message);
+ }
+ g_free(newurl);
+ } else {
+ curl = curl_easy_init();
+ if (!curl) return NULL;
+ curl_easy_setopt(curl, CURLOPT_URL, url);
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, handle_returned_data);
+ curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, handle_returned_header);
+ curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+ curl_easy_setopt(curl, CURLOPT_TIMEOUT, HTTP_GET_TIMEOUT);
+ curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
+ res = curl_easy_perform(curl);
+ curl_easy_cleanup(curl);
+ if (res == CURLE_OK) {
+ stream = g_memory_input_stream_new_from_data(content, response_size, g_free);
+ } else
+ _error = g_error_new_literal(G_FILE_ERROR, res, curl_easy_strerror(res));
+ }
+
+ if (error && _error) *error = _error;
+
+ return stream;
+}
+
static gboolean expose_event_cb(GtkWidget *widget, GdkEvent *event,
gpointer user_data)
{
@@ -255,6 +354,34 @@ static void size_allocate_cb(GtkWidget *widget, GdkRectangle *allocation,
w->redraw();
}
+static size_t handle_returned_data(char* ptr, size_t size, size_t nmemb, void* stream) {
+ if (!response_data)
+ response_data = (char*)malloc(size*nmemb);
+ else
+ response_data = (char*)realloc(response_data, response_size+size*nmemb);
+ if (response_data) {
+ memcpy(response_data+response_size, ptr, size*nmemb);
+ response_size += size*nmemb;
+ }
+ return size*nmemb;
+}
+
+static size_t handle_returned_header(void* ptr, size_t size, size_t nmemb, void* stream) {
+ char* header = NULL;
+
+ header = (char*) malloc(size*nmemb + 1);
+ memcpy(header, ptr, size*nmemb);
+ header[size*nmemb] = 0;
+ if (strncmp(header, "Content-Type: ", 14) == 0) {
+ char* stop = header + 14;
+ stop = strpbrk(header + 14, "\r\n;");
+ if (stop) *stop = 0;
+ response_mime = strdup(header + 14);
+ }
+ free(header);
+ return size*nmemb;
+}
+
///////////////////////////////////////////////////////////
extern "C" {
diff --git a/src/plugins/litehtml_viewer/lh_widget.h b/src/plugins/litehtml_viewer/lh_widget.h
@@ -1,8 +1,11 @@
#include <gtk/gtk.h>
#include <glib.h>
+#include <gio/gio.h>
#include "container_linux.h"
+#define HTTP_GET_TIMEOUT 60L
+
class lh_widget : public container_linux
{
public:
@@ -28,7 +31,9 @@ class lh_widget : public container_linux
private:
void paint_white();
+ GInputStream *load_url(const gchar *url, GError **error);
+ GInputStream *stream;
litehtml::document::ptr m_html;
gint m_rendered_width;
GtkWidget *m_drawing_area;
@@ -36,4 +41,5 @@ class lh_widget : public container_linux
GtkWidget *m_viewport;
litehtml::context m_context;
gint m_height;
+
};
