[evolution] Add a simple EMarkdownEditor widget
- From: Milan Crha <mcrha src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [evolution] Add a simple EMarkdownEditor widget
- Date: Tue, 25 Jan 2022 17:32:58 +0000 (UTC)
commit 4c25b2ebdeaf772357ab9464b24d3a1ede2a6162
Author: Milan Crha <mcrha redhat com>
Date: Tue Jan 25 18:31:27 2022 +0100
Add a simple EMarkdownEditor widget
Related to https://gitlab.gnome.org/GNOME/evolution/-/issues/449
data/icons/CMakeLists.txt | 18 +
...hicolor_actions_scalable_markdown-bold-dark.svg | 19 +
.../hicolor_actions_scalable_markdown-bold.svg | 18 +
...olor_actions_scalable_markdown-bullets-dark.svg | 31 ++
.../hicolor_actions_scalable_markdown-bullets.svg | 31 ++
...hicolor_actions_scalable_markdown-code-dark.svg | 28 +
.../hicolor_actions_scalable_markdown-code.svg | 26 +
...color_actions_scalable_markdown-header-dark.svg | 23 +
.../hicolor_actions_scalable_markdown-header.svg | 22 +
...hicolor_actions_scalable_markdown-help-dark.svg | 34 ++
.../hicolor_actions_scalable_markdown-help.svg | 33 ++
...color_actions_scalable_markdown-italic-dark.svg | 16 +
.../hicolor_actions_scalable_markdown-italic.svg | 16 +
...hicolor_actions_scalable_markdown-link-dark.svg | 30 ++
.../hicolor_actions_scalable_markdown-link.svg | 27 +
...olor_actions_scalable_markdown-numbers-dark.svg | 40 ++
.../hicolor_actions_scalable_markdown-numbers.svg | 40 ++
...icolor_actions_scalable_markdown-quote-dark.svg | 25 +
.../hicolor_actions_scalable_markdown-quote.svg | 25 +
.../evolution-mail-composer-docs.sgml.in | 4 +
.../evolution-util/evolution-util-docs.sgml.in | 5 +
po/POTFILES.in | 1 +
src/e-util/CMakeLists.txt | 5 +
src/e-util/e-markdown-editor.c | 585 +++++++++++++++++++++
src/e-util/e-markdown-editor.h | 57 ++
src/e-util/e-util.h | 1 +
src/e-util/test-markdown-editor.c | 81 +++
27 files changed, 1241 insertions(+)
---
diff --git a/data/icons/CMakeLists.txt b/data/icons/CMakeLists.txt
index 2d445c9695..d6cbfb2b3f 100644
--- a/data/icons/CMakeLists.txt
+++ b/data/icons/CMakeLists.txt
@@ -92,6 +92,24 @@ set(private_icons
hicolor_actions_32x32_view-calendar-month.png
hicolor_actions_32x32_view-calendar-week.png
hicolor_actions_32x32_view-calendar-workweek.png
+ hicolor_actions_scalable_markdown-bold.svg
+ hicolor_actions_scalable_markdown-bold-dark.svg
+ hicolor_actions_scalable_markdown-bullets.svg
+ hicolor_actions_scalable_markdown-bullets-dark.svg
+ hicolor_actions_scalable_markdown-code.svg
+ hicolor_actions_scalable_markdown-code-dark.svg
+ hicolor_actions_scalable_markdown-header.svg
+ hicolor_actions_scalable_markdown-header-dark.svg
+ hicolor_actions_scalable_markdown-help.svg
+ hicolor_actions_scalable_markdown-help-dark.svg
+ hicolor_actions_scalable_markdown-italic.svg
+ hicolor_actions_scalable_markdown-italic-dark.svg
+ hicolor_actions_scalable_markdown-link.svg
+ hicolor_actions_scalable_markdown-link-dark.svg
+ hicolor_actions_scalable_markdown-numbers.svg
+ hicolor_actions_scalable_markdown-numbers-dark.svg
+ hicolor_actions_scalable_markdown-quote.svg
+ hicolor_actions_scalable_markdown-quote-dark.svg
hicolor_actions_scalable_view-calendar-day.svg
hicolor_actions_scalable_view-calendar-list.svg
hicolor_actions_scalable_view-calendar-month.svg
diff --git a/data/icons/hicolor_actions_scalable_markdown-bold-dark.svg
b/data/icons/hicolor_actions_scalable_markdown-bold-dark.svg
new file mode 100644
index 0000000000..e56fb34935
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-bold-dark.svg
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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diff --git a/data/icons/hicolor_actions_scalable_markdown-bold.svg
b/data/icons/hicolor_actions_scalable_markdown-bold.svg
new file mode 100644
index 0000000000..39a46d8331
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-bold.svg
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diff --git a/data/icons/hicolor_actions_scalable_markdown-bullets-dark.svg
b/data/icons/hicolor_actions_scalable_markdown-bullets-dark.svg
new file mode 100644
index 0000000000..fa2bf472e6
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-bullets-dark.svg
@@ -0,0 +1,31 @@
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diff --git a/data/icons/hicolor_actions_scalable_markdown-bullets.svg
b/data/icons/hicolor_actions_scalable_markdown-bullets.svg
new file mode 100644
index 0000000000..fe13db36e8
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-bullets.svg
@@ -0,0 +1,31 @@
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diff --git a/data/icons/hicolor_actions_scalable_markdown-code-dark.svg
b/data/icons/hicolor_actions_scalable_markdown-code-dark.svg
new file mode 100644
index 0000000000..23b6dcf3ff
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-code-dark.svg
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diff --git a/data/icons/hicolor_actions_scalable_markdown-code.svg
b/data/icons/hicolor_actions_scalable_markdown-code.svg
new file mode 100644
index 0000000000..ad3aa41fd4
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-code.svg
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diff --git a/data/icons/hicolor_actions_scalable_markdown-header-dark.svg
b/data/icons/hicolor_actions_scalable_markdown-header-dark.svg
new file mode 100644
index 0000000000..d5dcf32db1
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-header-dark.svg
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diff --git a/data/icons/hicolor_actions_scalable_markdown-header.svg
b/data/icons/hicolor_actions_scalable_markdown-header.svg
new file mode 100644
index 0000000000..e509013d69
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diff --git a/data/icons/hicolor_actions_scalable_markdown-help-dark.svg
b/data/icons/hicolor_actions_scalable_markdown-help-dark.svg
new file mode 100644
index 0000000000..fcd2864596
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diff --git a/data/icons/hicolor_actions_scalable_markdown-help.svg
b/data/icons/hicolor_actions_scalable_markdown-help.svg
new file mode 100644
index 0000000000..6be86d3402
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+ id="defs33410" /><path
+
style="fill:#1a1a1a;fill-rule:evenodd;stroke:#e6e6e6;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 4,3.0000001 V 20.999999"
+ id="path33601" /><path
+
style="fill:none;fill-rule:evenodd;stroke:#e6e6e6;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 7.0000095,6.0000002 15,6"
+ id="path33702-3" /><path
+
style="fill:none;fill-rule:evenodd;stroke:#e6e6e6;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 7.0000095,12 H 20.999999"
+ id="path33704-6" /><path
+
style="fill:none;fill-rule:evenodd;stroke:#e6e6e6;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 7.0000095,18 H 15"
+ id="path33706-7" /></svg>
diff --git a/data/icons/hicolor_actions_scalable_markdown-quote.svg
b/data/icons/hicolor_actions_scalable_markdown-quote.svg
new file mode 100644
index 0000000000..3b301881d3
--- /dev/null
+++ b/data/icons/hicolor_actions_scalable_markdown-quote.svg
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ version="1.1"
+ id="svg33406"
+ xml:space="preserve"
+ width="24"
+ height="24"
+ viewBox="0 0 24 24"
+ xmlns="http://www.w3.org/2000/svg";
+ xmlns:svg="http://www.w3.org/2000/svg";><defs
+ id="defs33410" /><path
+
style="fill:#1a1a1a;fill-rule:evenodd;stroke:#1a1a1a;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 4,3.0000001 V 20.999999"
+ id="path33601" /><path
+
style="fill:none;fill-rule:evenodd;stroke:#1a1a1a;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 7.0000095,6.0000002 15,6"
+ id="path33702-3" /><path
+
style="fill:none;fill-rule:evenodd;stroke:#1a1a1a;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 7.0000095,12 H 20.999999"
+ id="path33704-6" /><path
+
style="fill:none;fill-rule:evenodd;stroke:#1a1a1a;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+ d="M 7.0000095,18 H 15"
+ id="path33706-7" /></svg>
diff --git a/docs/reference/evolution-mail-composer/evolution-mail-composer-docs.sgml.in
b/docs/reference/evolution-mail-composer/evolution-mail-composer-docs.sgml.in
index ea4fca7cd8..82059231af 100644
--- a/docs/reference/evolution-mail-composer/evolution-mail-composer-docs.sgml.in
+++ b/docs/reference/evolution-mail-composer/evolution-mail-composer-docs.sgml.in
@@ -29,6 +29,10 @@
<title>API Index</title>
<xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
</index>
+ <index id="api-index-3-44" role="3.44">
+ <title>Index of new symbols in 3.44</title>
+ <xi:include href="xml/api-index-3.44.xml"><xi:fallback /></xi:include>
+ </index>
<index id="api-index-3-42" role="3.42">
<title>Index of new symbols in 3.42</title>
<xi:include href="xml/api-index-3.42.xml"><xi:fallback /></xi:include>
diff --git a/docs/reference/evolution-util/evolution-util-docs.sgml.in
b/docs/reference/evolution-util/evolution-util-docs.sgml.in
index 779f3ae6c4..7f7b3bb5ab 100644
--- a/docs/reference/evolution-util/evolution-util-docs.sgml.in
+++ b/docs/reference/evolution-util/evolution-util-docs.sgml.in
@@ -280,6 +280,7 @@
<xi:include href="xml/e-interval-chooser.xml"/>
<xi:include href="xml/e-mail-identity-combo-box.xml"/>
<xi:include href="xml/e-map.xml"/>
+ <xi:include href="xml/e-markdown-editor.xml"/>
<xi:include href="xml/e-menu-tool-action.xml"/>
<xi:include href="xml/e-menu-tool-button.xml"/>
<xi:include href="xml/e-mktemp.xml"/>
@@ -326,6 +327,10 @@
<title>Index</title>
<xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
</index>
+ <index id="api-index-3-44" role="3.44">
+ <title>Index of new symbols in 3.44</title>
+ <xi:include href="xml/api-index-3.44.xml"><xi:fallback /></xi:include>
+ </index>
<index id="api-index-3-42" role="3.42">
<title>Index of new symbols in 3.42</title>
<xi:include href="xml/api-index-3.42.xml"><xi:fallback /></xi:include>
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 6faa645e63..b003bb2dad 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -237,6 +237,7 @@ src/e-util/e-mail-signature-editor.c
src/e-util/e-mail-signature-manager.c
src/e-util/e-mail-signature-script-dialog.c
src/e-util/e-map.c
+src/e-util/e-markdown-editor.c
src/e-util/e-misc-utils.c
src/e-util/e-name-selector-dialog.c
src/e-util/e-name-selector-entry.c
diff --git a/src/e-util/CMakeLists.txt b/src/e-util/CMakeLists.txt
index 7048adf146..e81570ad3c 100644
--- a/src/e-util/CMakeLists.txt
+++ b/src/e-util/CMakeLists.txt
@@ -168,6 +168,7 @@ set(SOURCES
e-mail-signature-script-dialog.c
e-mail-signature-tree-view.c
e-map.c
+ e-markdown-editor.c
e-marshal.c
e-menu-tool-action.c
e-menu-tool-button.c
@@ -443,6 +444,7 @@ set(HEADERS
e-mail-signature-script-dialog.h
e-mail-signature-tree-view.h
e-map.h
+ e-markdown-editor.h
e-menu-tool-action.h
e-menu-tool-button.h
e-misc-utils.h
@@ -651,6 +653,7 @@ target_include_directories(evolution-util PUBLIC
${GEO_INCLUDE_DIRS}
${GNOME_PLATFORM_INCLUDE_DIRS}
${GSPELL_INCLUDE_DIRS}
+ ${MARKDOWN_INCLUDE_DIRS}
)
target_link_libraries(evolution-util
@@ -663,6 +666,7 @@ target_link_libraries(evolution-util
${GSPELL_LDFLAGS}
${ICONV_LIBS}
${MATH_LDFLAGS}
+ ${MARKDOWN_LDFLAGS}
)
if(HAVE_LDAP)
@@ -816,6 +820,7 @@ add_private_programs_simple(
test-dateedit
test-html-editor
test-mail-signatures
+ test-markdown-editor
test-name-selector
test-preferences-window
test-proxy-preferences
diff --git a/src/e-util/e-markdown-editor.c b/src/e-util/e-markdown-editor.c
new file mode 100644
index 0000000000..3325ea6395
--- /dev/null
+++ b/src/e-util/e-markdown-editor.c
@@ -0,0 +1,585 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * SPDX-FileCopyrightText: (C) 2022 Red Hat (www.redhat.com)
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "evolution-config.h"
+
+#ifdef HAVE_MARKDOWN
+#include <cmark.h>
+#endif
+
+#include <glib/gi18n-lib.h>
+#include <gtk/gtk.h>
+
+#include <libedataserverui/libedataserverui.h>
+
+#include "e-misc-utils.h"
+#include "e-spell-text-view.h"
+#include "e-web-view.h"
+
+#include "e-markdown-editor.h"
+
+struct _EMarkdownEditorPrivate {
+ GtkTextView *text_view;
+ EWebView *web_view;
+ GtkToolbar *action_toolbar;
+};
+
+G_DEFINE_TYPE_WITH_PRIVATE (EMarkdownEditor, e_markdown_editor, GTK_TYPE_BOX)
+
+static void
+e_markdown_editor_get_selection (EMarkdownEditor *self,
+ GtkTextIter *out_start,
+ GtkTextIter *out_end,
+ gchar **out_selected_text)
+{
+ GtkTextBuffer *buffer;
+ GtkTextIter start, end;
+
+ buffer = gtk_text_view_get_buffer (self->priv->text_view);
+
+ if (gtk_text_buffer_get_selection_bounds (buffer, &start, &end) && out_selected_text) {
+ *out_selected_text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
+ } else if (out_selected_text) {
+ *out_selected_text = NULL;
+ }
+
+ if (out_start)
+ *out_start = start;
+
+ if (out_end)
+ *out_end = end;
+}
+
+static void
+e_markdown_editor_surround_selection (EMarkdownEditor *self,
+ gboolean whole_lines,
+ const gchar *prefix,
+ const gchar *suffix)
+{
+ GtkTextIter start, end;
+ GtkTextBuffer *buffer;
+
+ e_markdown_editor_get_selection (self, &start, &end, NULL);
+
+ buffer = gtk_text_view_get_buffer (self->priv->text_view);
+
+ gtk_text_buffer_begin_user_action (buffer);
+
+ if (whole_lines) {
+ gint to_line, ii;
+
+ to_line = gtk_text_iter_get_line (&end);
+
+ for (ii = gtk_text_iter_get_line (&start); ii <= to_line; ii++) {
+ GtkTextIter iter;
+
+ gtk_text_buffer_get_iter_at_line (buffer, &iter, ii);
+
+ if (prefix && *prefix)
+ gtk_text_buffer_insert (buffer, &iter, prefix, -1);
+
+ if (suffix && *suffix) {
+ gtk_text_iter_forward_to_line_end (&iter);
+ gtk_text_buffer_insert (buffer, &iter, suffix, -1);
+ }
+ }
+ } else {
+ gint end_offset = gtk_text_iter_get_offset (&end);
+
+ if (prefix && *prefix) {
+ gtk_text_buffer_insert (buffer, &start, prefix, -1);
+ /* Keep the cursor where it is, move it only when the suffix is used */
+ end_offset += strlen (prefix);
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, end_offset);
+ }
+
+ if (suffix && *suffix) {
+ gtk_text_buffer_insert (buffer, &end, suffix, -1);
+ /* Place the cursor before the suffix */
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, end_offset);
+ gtk_text_buffer_select_range (buffer, &end, &end);
+ }
+ }
+
+ gtk_text_buffer_end_user_action (buffer);
+}
+
+static void
+e_markdown_editor_add_bold_text_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_surround_selection (self, FALSE, "**", "**");
+}
+
+static void
+e_markdown_editor_add_italic_text_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_surround_selection (self, FALSE, "*", "*");
+}
+
+static void
+e_markdown_editor_insert_quote_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_surround_selection (self, TRUE, "> ", NULL);
+}
+
+static void
+e_markdown_editor_insert_code_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+ GtkTextIter start, end;
+ gchar *selection = NULL;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_get_selection (self, &start, &end, &selection);
+
+ if (selection && strchr (selection, '\n')) {
+ GtkTextBuffer *buffer;
+ GtkTextIter iter;
+ gint start_line, end_line;
+
+ buffer = gtk_text_view_get_buffer (self->priv->text_view);
+
+ gtk_text_buffer_begin_user_action (buffer);
+
+ start_line = gtk_text_iter_get_line (&start);
+ end_line = gtk_text_iter_get_line (&end);
+
+ gtk_text_buffer_get_iter_at_line (buffer, &iter, start_line);
+ gtk_text_buffer_insert (buffer, &iter, "```\n", -1);
+
+ /* One line added above + 1 for the end line itself */
+ end_line = end_line + 2;
+ gtk_text_buffer_get_iter_at_line (buffer, &iter, end_line);
+ if (gtk_text_iter_is_end (&iter) && gtk_text_iter_get_line_offset (&iter) > 0) {
+ gtk_text_buffer_insert (buffer, &iter, "\n```\n", -1);
+ } else {
+ if (gtk_text_iter_is_end (&iter))
+ end_line--;
+ gtk_text_buffer_insert (buffer, &iter, "```\n", -1);
+ }
+
+ /* Place the cursor before the suffix */
+ gtk_text_buffer_get_iter_at_line (buffer, &iter, end_line);
+ gtk_text_buffer_select_range (buffer, &iter, &iter);
+
+ gtk_text_buffer_end_user_action (buffer);
+ } else {
+ e_markdown_editor_surround_selection (self, FALSE, "`", "`");
+ }
+
+ g_free (selection);
+}
+
+static void
+e_markdown_editor_add_link_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+ GtkTextBuffer *buffer;
+ GtkTextIter start, end;
+ gchar *selection = NULL;
+ gint offset;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_get_selection (self, &start, &end, &selection);
+
+ buffer = gtk_text_view_get_buffer (self->priv->text_view);
+ offset = gtk_text_iter_get_offset (&start);
+
+ gtk_text_buffer_begin_user_action (buffer);
+
+ if (selection && *selection) {
+ gint end_offset = gtk_text_iter_get_offset (&end);
+
+ if (g_ascii_strncasecmp (selection, "http:", 5) == 0 ||
+ g_ascii_strncasecmp (selection, "https:", 6) == 0) {
+ gtk_text_buffer_insert (buffer, &start, "[](", -1);
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, end_offset + 3);
+ gtk_text_buffer_insert (buffer, &end, ")", -1);
+ gtk_text_buffer_get_iter_at_offset (buffer, &start, offset + 1);
+ end = start;
+ } else {
+ gtk_text_buffer_insert (buffer, &start, "[", -1);
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, end_offset + 1);
+ gtk_text_buffer_insert (buffer, &end, "](https://)", -1);
+ gtk_text_buffer_get_iter_at_offset (buffer, &start, end_offset + 1 + 2);
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, end_offset + 1 + 10);
+ }
+
+ gtk_text_buffer_select_range (buffer, &start, &end);
+ } else {
+ gtk_text_buffer_insert (buffer, &start, "[](https://)", -1);
+
+ /* skip "[](" */
+ offset += 3;
+
+ gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
+
+ /* after the "https://"; text */
+ gtk_text_buffer_get_iter_at_offset (buffer, &end, offset + 8);
+
+ gtk_text_buffer_select_range (buffer, &start, &end);
+ }
+
+ gtk_text_buffer_end_user_action (buffer);
+}
+
+static void
+e_markdown_editor_add_bullet_list_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_surround_selection (self, TRUE, "- ", NULL);
+}
+
+static void
+e_markdown_editor_add_numbered_list_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_surround_selection (self, TRUE, "1. ", NULL);
+}
+
+static void
+e_markdown_editor_add_header_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ e_markdown_editor_surround_selection (self, TRUE, "# ", NULL);
+}
+
+static void
+e_markdown_editor_markdown_syntax_cb (GtkToolButton *button,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+ GtkWidget *toplevel;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ toplevel = gtk_widget_get_toplevel (GTK_WIDGET (self));
+
+ e_show_uri (GTK_IS_WINDOW (toplevel) ? GTK_WINDOW (toplevel) : NULL, "https://commonmark.org/help/";);
+}
+
+#ifdef HAVE_MARKDOWN
+static void
+e_markdown_editor_switch_page_cb (GtkNotebook *notebook,
+ GtkWidget *page,
+ guint page_num,
+ gpointer user_data)
+{
+ EMarkdownEditor *self = user_data;
+ gchar *converted;
+ gchar *html;
+
+ g_return_if_fail (E_IS_MARKDOWN_EDITOR (self));
+
+ gtk_widget_set_visible (GTK_WIDGET (self->priv->action_toolbar), page_num != 1);
+
+ /* Not the Preview page */
+ if (page_num != 1)
+ return;
+
+ converted = e_markdown_editor_dup_html (self);
+
+ html = g_strconcat ("<div class=\"-e-web-view-background-color -e-web-view-text-color\"
style=\"border: none; padding: 0px; margin: 0;\">",
+ converted ? converted : "",
+ "</div>",
+ NULL);
+
+ e_web_view_load_string (self->priv->web_view, html);
+
+ g_free (converted);
+ g_free (html);
+}
+#endif /* HAVE_MARKDOWN */
+
+static gboolean
+e_markdown_editor_is_dark_theme (EMarkdownEditor *self)
+{
+ GdkRGBA rgba;
+ gdouble brightness;
+
+ e_utils_get_theme_color (GTK_WIDGET (self), "theme_text_color,theme_fg_color",
E_UTILS_DEFAULT_THEME_TEXT_COLOR, &rgba);
+
+ brightness =
+ (0.2109 * 255.0 * rgba.red) +
+ (0.5870 * 255.0 * rgba.green) +
+ (0.1021 * 255.0 * rgba.blue);
+
+ return brightness > 140;
+}
+
+static void
+e_markdown_editor_constructed (GObject *object)
+{
+ struct _items {
+ const gchar *label;
+ const gchar *icon_name;
+ const gchar *icon_name_dark;
+ GCallback callback;
+ } items[] = {
+ #define ITEM(lbl, icn, cbk) { lbl, icn, icn "-dark", G_CALLBACK (cbk) }
+ ITEM (N_("Add bold text"), "markdown-bold", e_markdown_editor_add_bold_text_cb),
+ ITEM (N_("Add italic text"), "markdown-italic", e_markdown_editor_add_italic_text_cb),
+ ITEM (N_("Insert a quote"), "markdown-quote", e_markdown_editor_insert_quote_cb),
+ ITEM (N_("Insert code"), "markdown-code", e_markdown_editor_insert_code_cb),
+ ITEM (N_("Add a link"), "markdown-link", e_markdown_editor_add_link_cb),
+ ITEM (N_("Add a bullet list"), "markdown-bullets", e_markdown_editor_add_bullet_list_cb),
+ ITEM (N_("Add a numbered list"), "markdown-numbers", e_markdown_editor_add_numbered_list_cb),
+ ITEM (N_("Add a header"), "markdown-header", e_markdown_editor_add_header_cb),
+ ITEM (NULL, "", NULL),
+ ITEM (N_("Open online common mark documentation"), "markdown-help", G_CALLBACK
(e_markdown_editor_markdown_syntax_cb))
+ #undef ITEM
+ };
+ EMarkdownEditor *self = E_MARKDOWN_EDITOR (object);
+ GtkWidget *widget;
+ GtkNotebook *notebook;
+ GtkScrolledWindow *scrolled_window;
+ gboolean is_dark_theme;
+ guint ii;
+
+ /* Chain up to parent's method. */
+ G_OBJECT_CLASS (e_markdown_editor_parent_class)->constructed (object);
+
+ widget = gtk_notebook_new ();
+ g_object_set (G_OBJECT (widget),
+ "halign", GTK_ALIGN_FILL,
+ "hexpand", TRUE,
+ "valign", GTK_ALIGN_FILL,
+ "vexpand", TRUE,
+ "visible", TRUE,
+ "show-border", FALSE,
+ "show-tabs", TRUE,
+ NULL);
+ gtk_box_pack_start (GTK_BOX (self), widget, TRUE, TRUE, 0);
+
+ notebook = GTK_NOTEBOOK (widget);
+
+ widget = gtk_scrolled_window_new (NULL, NULL);
+ g_object_set (G_OBJECT (widget),
+ "halign", GTK_ALIGN_FILL,
+ "hexpand", TRUE,
+ "valign", GTK_ALIGN_FILL,
+ "vexpand", TRUE,
+ "visible", TRUE,
+ "hscrollbar-policy", GTK_POLICY_AUTOMATIC,
+ "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
+ NULL);
+
+ gtk_notebook_append_page (notebook, widget, gtk_label_new_with_mnemonic (_("_Write")));
+
+ scrolled_window = GTK_SCROLLED_WINDOW (widget);
+
+ widget = gtk_text_view_new ();
+ g_object_set (G_OBJECT (widget),
+ "halign", GTK_ALIGN_FILL,
+ "hexpand", TRUE,
+ "valign", GTK_ALIGN_FILL,
+ "vexpand", TRUE,
+ "visible", TRUE,
+ "margin", 4,
+ "monospace", TRUE,
+ "wrap-mode", GTK_WRAP_WORD_CHAR,
+ NULL);
+
+ gtk_container_add (GTK_CONTAINER (scrolled_window), widget);
+
+ self->priv->text_view = GTK_TEXT_VIEW (widget);
+
+ e_buffer_tagger_connect (self->priv->text_view);
+ e_spell_text_view_attach (self->priv->text_view);
+
+ #ifdef HAVE_MARKDOWN
+ widget = gtk_scrolled_window_new (NULL, NULL);
+ g_object_set (G_OBJECT (widget),
+ "halign", GTK_ALIGN_FILL,
+ "hexpand", TRUE,
+ "valign", GTK_ALIGN_FILL,
+ "vexpand", TRUE,
+ "visible", TRUE,
+ "hscrollbar-policy", GTK_POLICY_AUTOMATIC,
+ "vscrollbar-policy", GTK_POLICY_AUTOMATIC,
+ NULL);
+
+ gtk_notebook_append_page (notebook, widget, gtk_label_new_with_mnemonic (_("_Preview")));
+
+ scrolled_window = GTK_SCROLLED_WINDOW (widget);
+
+ widget = e_web_view_new ();
+ g_object_set (G_OBJECT (widget),
+ "halign", GTK_ALIGN_FILL,
+ "hexpand", TRUE,
+ "valign", GTK_ALIGN_FILL,
+ "vexpand", TRUE,
+ "visible", TRUE,
+ "margin", 4,
+ NULL);
+
+ gtk_container_add (GTK_CONTAINER (scrolled_window), widget);
+
+ self->priv->web_view = E_WEB_VIEW (widget);
+ #endif /* HAVE_MARKDOWN */
+
+ widget = gtk_toolbar_new ();
+ gtk_widget_show (widget);
+ gtk_notebook_set_action_widget (notebook, widget, GTK_PACK_END);
+
+ self->priv->action_toolbar = GTK_TOOLBAR (widget);
+
+ is_dark_theme = e_markdown_editor_is_dark_theme (self);
+
+ for (ii = 0; ii < G_N_ELEMENTS (items); ii++) {
+ GtkToolItem *item;
+
+ if (items[ii].callback) {
+ GtkWidget *icon;
+ const gchar *icon_name;
+
+ icon_name = is_dark_theme ? items[ii].icon_name_dark : items[ii].icon_name;
+ icon = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_LARGE_TOOLBAR);
+ gtk_widget_show (GTK_WIDGET (icon));
+ item = gtk_tool_button_new (icon, _(items[ii].label));
+ gtk_tool_item_set_tooltip_text (item, _(items[ii].label));
+ g_signal_connect_object (item, "clicked", items[ii].callback, self, 0);
+ } else {
+ item = gtk_separator_tool_item_new ();
+ }
+
+ gtk_widget_show (GTK_WIDGET (item));
+ gtk_toolbar_insert (self->priv->action_toolbar, item, -1);
+ }
+
+ #ifdef HAVE_MARKDOWN
+ g_signal_connect_object (notebook, "switch-page", G_CALLBACK (e_markdown_editor_switch_page_cb),
self, 0);
+ #endif
+}
+
+static void
+e_markdown_editor_class_init (EMarkdownEditorClass *klass)
+{
+ GObjectClass *object_class;
+
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->constructed = e_markdown_editor_constructed;
+}
+
+static void
+e_markdown_editor_init (EMarkdownEditor *self)
+{
+ self->priv = e_markdown_editor_get_instance_private (self);
+}
+
+/**
+ * e_markdown_editor_new:
+ *
+ * Creates a new #EMarkdownEditor
+ *
+ * Returns: (transfer full): a new #EMarkdownEditor
+ *
+ * Since: 3.44
+ */
+GtkWidget *
+e_markdown_editor_new (void)
+{
+ return g_object_new (E_TYPE_MARKDOWN_EDITOR, NULL);
+}
+
+/**
+ * e_markdown_editor_dup_text:
+ * @self: an #EMarkdownEditor
+ *
+ * Get the markdown text entered in the @self. To get
+ * the HTML version of it use e_markdown_editor_dup_html().
+ * Free the returned string with g_free(), when no longer needed.
+ *
+ * Returns: (transfer full): the markdown text
+ *
+ * Since: 3.44
+ **/
+gchar *
+e_markdown_editor_dup_text (EMarkdownEditor *self)
+{
+ GtkTextBuffer *buffer;
+ GtkTextIter start, end;
+
+ g_return_val_if_fail (E_IS_MARKDOWN_EDITOR (self), NULL);
+
+ buffer = gtk_text_view_get_buffer (self->priv->text_view);
+ gtk_text_buffer_get_bounds (buffer, &start, &end);
+
+ return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
+}
+
+/**
+ * e_markdown_editor_dup_html:
+ * @self: an #EMarkdownEditor
+ *
+ * Get the HTML version of the markdown text entered in the @self.
+ * To get the markdown text use e_markdown_editor_dup_text().
+ * Free the returned string with g_free(), when no longer needed.
+ *
+ * Note: The function can return %NULL when was not built
+ * with the markdown support.
+ *
+ * Returns: (transfer full) (nullable): the markdown text converted
+ * into HTML, or %NULL, when was not built with the markdown support
+ *
+ * Since: 3.44
+ **/
+gchar *
+e_markdown_editor_dup_html (EMarkdownEditor *self)
+{
+ #ifdef HAVE_MARKDOWN
+ GString *html;
+ gchar *text, *converted;
+ #endif
+
+ g_return_val_if_fail (E_IS_MARKDOWN_EDITOR (self), NULL);
+
+ #ifdef HAVE_MARKDOWN
+ text = e_markdown_editor_dup_text (self);
+ converted = cmark_markdown_to_html (text ? text : "", text ? strlen (text) : 0,
+ CMARK_OPT_VALIDATE_UTF8 | CMARK_OPT_UNSAFE);
+
+ html = e_str_replace_string (converted, "<blockquote>", "<blockquote type=\"cite\">");
+
+ g_free (converted);
+ g_free (text);
+
+ return g_string_free (html, FALSE);
+ #else
+ return NULL;
+ #endif
+}
diff --git a/src/e-util/e-markdown-editor.h b/src/e-util/e-markdown-editor.h
new file mode 100644
index 0000000000..bdc429c8b9
--- /dev/null
+++ b/src/e-util/e-markdown-editor.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * SPDX-FileCopyrightText: (C) 2022 Red Hat (www.redhat.com)
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
+#error "Only <e-util/e-util.h> should be included directly."
+#endif
+
+#ifndef E_MARKDOWN_EDITOR_H
+#define E_MARKDOWN_EDITOR_H
+
+#include <gtk/gtk.h>
+
+/* Standard GObject macros */
+#define E_TYPE_MARKDOWN_EDITOR \
+ (e_markdown_editor_get_type ())
+#define E_MARKDOWN_EDITOR(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST \
+ ((obj), E_TYPE_MARKDOWN_EDITOR, EMarkdownEditor))
+#define E_MARKDOWN_EDITOR_CLASS(cls) \
+ (G_TYPE_CHECK_CLASS_CAST \
+ ((cls), E_TYPE_MARKDOWN_EDITOR, EMarkdownEditorClass))
+#define E_IS_MARKDOWN_EDITOR(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE \
+ ((obj), E_TYPE_MARKDOWN_EDITOR))
+#define E_IS_MARKDOWN_EDITOR_CLASS(cls) \
+ (G_TYPE_CHECK_CLASS_TYPE \
+ ((cls), E_TYPE_MARKDOWN_EDITOR))
+#define E_MARKDOWN_EDITOR_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS \
+ ((obj), E_TYPE_MARKDOWN_EDITOR, EMarkdownEditorClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EMarkdownEditor EMarkdownEditor;
+typedef struct _EMarkdownEditorClass EMarkdownEditorClass;
+typedef struct _EMarkdownEditorPrivate EMarkdownEditorPrivate;
+
+struct _EMarkdownEditor {
+ GtkBox parent;
+ EMarkdownEditorPrivate *priv;
+};
+
+struct _EMarkdownEditorClass {
+ GtkBoxClass parent_class;
+};
+
+GType e_markdown_editor_get_type (void) G_GNUC_CONST;
+GtkWidget * e_markdown_editor_new (void);
+gchar * e_markdown_editor_dup_text (EMarkdownEditor *self);
+gchar * e_markdown_editor_dup_html (EMarkdownEditor *self);
+
+G_END_DECLS
+
+#endif /* E_MARKDOWN_EDITOR_H */
diff --git a/src/e-util/e-util.h b/src/e-util/e-util.h
index c430fed8bd..666363e9e8 100644
--- a/src/e-util/e-util.h
+++ b/src/e-util/e-util.h
@@ -152,6 +152,7 @@
#include <e-util/e-mail-signature-script-dialog.h>
#include <e-util/e-mail-signature-tree-view.h>
#include <e-util/e-map.h>
+#include <e-util/e-markdown-editor.h>
#include <e-util/e-menu-tool-action.h>
#include <e-util/e-menu-tool-button.h>
#include <e-util/e-misc-utils.h>
diff --git a/src/e-util/test-markdown-editor.c b/src/e-util/test-markdown-editor.c
new file mode 100644
index 0000000000..88d439dd7e
--- /dev/null
+++ b/src/e-util/test-markdown-editor.c
@@ -0,0 +1,81 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * SPDX-FileCopyrightText: (C) 2022 Red Hat (www.redhat.com)
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "evolution-config.h"
+
+#include <glib/gi18n-lib.h>
+#include <e-util/e-util.h>
+
+static gboolean
+window_delete_event_cb (GtkWidget *widget,
+ GdkEvent *event,
+ gpointer user_data)
+{
+ gtk_main_quit ();
+
+ return FALSE;
+}
+
+static gint
+on_idle_create_widget (gpointer user_data)
+{
+ GtkWidget *window, *editor;
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_default_size (GTK_WINDOW (window), 640, 480);
+
+ g_signal_connect (
+ window, "delete-event",
+ G_CALLBACK (window_delete_event_cb), NULL);
+
+ editor = e_markdown_editor_new ();
+
+ g_object_set (G_OBJECT (editor),
+ "halign", GTK_ALIGN_FILL,
+ "hexpand", TRUE,
+ "valign", GTK_ALIGN_FILL,
+ "vexpand", TRUE,
+ "visible", TRUE,
+ NULL);
+
+ gtk_container_add (GTK_CONTAINER (window), editor);
+
+ gtk_widget_show (window);
+
+ return FALSE;
+}
+
+gint
+main (gint argc,
+ gchar **argv)
+{
+ GList *modules;
+
+ bindtextdomain (GETTEXT_PACKAGE, EVOLUTION_LOCALEDIR);
+ bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+ textdomain (GETTEXT_PACKAGE);
+
+ gtk_init (&argc, &argv);
+
+ e_util_init_main_thread (NULL);
+ e_passwords_init ();
+
+ g_setenv ("EVOLUTION_SOURCE_WEBKITDATADIR", EVOLUTION_SOURCE_WEBKITDATADIR, FALSE);
+
+ gtk_icon_theme_append_search_path (gtk_icon_theme_get_default (), EVOLUTION_ICONDIR);
+ gtk_icon_theme_append_search_path (gtk_icon_theme_get_default (), E_DATA_SERVER_ICONDIR);
+
+ modules = e_module_load_all_in_directory (EVOLUTION_MODULEDIR);
+ g_list_free_full (modules, (GDestroyNotify) g_type_module_unuse);
+
+ g_idle_add ((GSourceFunc) on_idle_create_widget, NULL);
+
+ gtk_main ();
+
+ e_misc_util_free_global_memory ();
+
+ return 0;
+}
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