Merge pull request #211 from atom/linux-message-box
Implement message box API on Linux
This commit is contained in:
commit
1ebbf32f29
5 changed files with 227 additions and 3 deletions
2
atom.gyp
2
atom.gyp
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@ -127,6 +127,8 @@
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'browser/ui/gtk/gtk_custom_menu.h',
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'browser/ui/gtk/gtk_custom_menu_item.cc',
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'browser/ui/gtk/gtk_custom_menu_item.h',
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'browser/ui/gtk/gtk_util.cc',
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'browser/ui/gtk/gtk_util.h',
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'browser/ui/gtk/gtk_window_util.cc',
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'browser/ui/gtk/gtk_window_util.h',
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'browser/ui/message_box.h',
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89
browser/ui/gtk/gtk_util.cc
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89
browser/ui/gtk/gtk_util.cc
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@ -0,0 +1,89 @@
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "browser/ui/gtk/gtk_util.h"
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#include <cairo/cairo.h>
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#include "base/logging.h"
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namespace gtk_util {
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namespace {
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const char kBoldLabelMarkup[] = "<span weight='bold'>%s</span>";
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// Returns the approximate number of characters that can horizontally fit in
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// |pixel_width| pixels.
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int GetCharacterWidthForPixels(GtkWidget* widget, int pixel_width) {
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DCHECK(gtk_widget_get_realized(widget))
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<< " widget must be realized to compute font metrics correctly";
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PangoContext* context = gtk_widget_create_pango_context(widget);
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GtkStyle* style = gtk_widget_get_style(widget);
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PangoFontMetrics* metrics = pango_context_get_metrics(context,
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style->font_desc, pango_context_get_language(context));
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// This technique (max of char and digit widths) matches the code in
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// gtklabel.c.
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int char_width = pixel_width * PANGO_SCALE /
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std::max(pango_font_metrics_get_approximate_char_width(metrics),
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pango_font_metrics_get_approximate_digit_width(metrics));
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pango_font_metrics_unref(metrics);
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g_object_unref(context);
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return char_width;
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}
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void OnLabelRealize(GtkWidget* label, gpointer pixel_width) {
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gtk_label_set_width_chars(
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GTK_LABEL(label),
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GetCharacterWidthForPixels(label, GPOINTER_TO_INT(pixel_width)));
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}
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} // namespace
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GtkWidget* LeftAlignMisc(GtkWidget* misc) {
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gtk_misc_set_alignment(GTK_MISC(misc), 0, 0.5);
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return misc;
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}
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GtkWidget* CreateBoldLabel(const std::string& text) {
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GtkWidget* label = gtk_label_new(NULL);
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char* markup = g_markup_printf_escaped(kBoldLabelMarkup, text.c_str());
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gtk_label_set_markup(GTK_LABEL(label), markup);
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g_free(markup);
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return LeftAlignMisc(label);
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}
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bool IsWidgetAncestryVisible(GtkWidget* widget) {
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GtkWidget* parent = widget;
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while (parent && gtk_widget_get_visible(parent))
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parent = gtk_widget_get_parent(parent);
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return !parent;
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}
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void SetLabelWidth(GtkWidget* label, int pixel_width) {
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gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment(GTK_MISC(label), 0, 0.5);
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// Do the simple thing in LTR because the bug only affects right-aligned
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// text. Also, when using the workaround, the label tries to maintain
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// uniform line-length, which we don't really want.
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if (gtk_widget_get_direction(label) == GTK_TEXT_DIR_LTR) {
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gtk_widget_set_size_request(label, pixel_width, -1);
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} else {
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// The label has to be realized before we can adjust its width.
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if (gtk_widget_get_realized(label)) {
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OnLabelRealize(label, GINT_TO_POINTER(pixel_width));
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} else {
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g_signal_connect(label, "realize", G_CALLBACK(OnLabelRealize),
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GINT_TO_POINTER(pixel_width));
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}
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}
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}
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} // namespace gtk_util
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31
browser/ui/gtk/gtk_util.h
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31
browser/ui/gtk/gtk_util.h
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@ -0,0 +1,31 @@
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef ATOM_BROWSER_UI_GTK_GTK_UTIL_H_
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#define ATOM_BROWSER_UI_GTK_GTK_UTIL_H_
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#include <gtk/gtk.h>
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#include <string>
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namespace gtk_util {
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// Left-align the given GtkMisc and return the same pointer.
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GtkWidget* LeftAlignMisc(GtkWidget* misc);
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// Create a left-aligned label with the given text in bold.
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GtkWidget* CreateBoldLabel(const std::string& text);
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// Checks whether a widget is actually visible, i.e. whether it and all its
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// ancestors up to its toplevel are visible.
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bool IsWidgetAncestryVisible(GtkWidget* widget);
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// Sets the given label's size request to |pixel_width|. This will cause the
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// label to wrap if it needs to. The reason for this function is that some
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// versions of GTK mis-align labels that have a size request and line wrapping,
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// and this function hides the complexity of the workaround.
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void SetLabelWidth(GtkWidget* label, int pixel_width);
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} // namespace gtk_util
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#endif // ATOM_BROWSER_UI_GTK_GTK_UTIL_H_
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@ -5,16 +5,116 @@
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#include "browser/ui/message_box.h"
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#include "base/callback.h"
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#include "base/strings/string_util.h"
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#include "browser/native_window.h"
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#include "browser/ui/gtk/gtk_util.h"
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#include "ui/base/gtk/gtk_signal.h"
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namespace atom {
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namespace {
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class MessageBox {
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public:
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MessageBox(NativeWindow* parent_window,
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MessageBoxType type,
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const std::vector<std::string>& buttons,
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const std::string& title,
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const std::string& message,
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const std::string& detail)
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: cancel_id_(0) {
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GtkWindow* window = parent_window ? parent_window->GetNativeWindow() : NULL;
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dialog_ = gtk_dialog_new_with_buttons(
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title.c_str(),
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window,
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static_cast<GtkDialogFlags>(GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR),
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NULL);
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for (size_t i = 0; i < buttons.size(); ++i)
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gtk_dialog_add_button(GTK_DIALOG(dialog_),
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TranslateToStock(i, buttons[i]),
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i);
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GtkWidget* content_area = gtk_dialog_get_content_area(GTK_DIALOG(dialog_));
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GtkWidget* message_label = gtk_util::CreateBoldLabel(message);
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gtk_util::LeftAlignMisc(message_label);
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gtk_box_pack_start(GTK_BOX(content_area), message_label, FALSE, FALSE, 0);
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GtkWidget* detail_label = gtk_label_new(detail.c_str());
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gtk_util::LeftAlignMisc(detail_label);
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gtk_box_pack_start(GTK_BOX(content_area), detail_label, FALSE, FALSE, 0);
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gtk_window_set_resizable(GTK_WINDOW(dialog_), FALSE);
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}
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~MessageBox() {
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gtk_widget_destroy(dialog_);
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}
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const char* TranslateToStock(int id, const std::string& text) {
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if (LowerCaseEqualsASCII(text, "cancel")) {
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cancel_id_ = id;
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return GTK_STOCK_CANCEL;
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} else if (LowerCaseEqualsASCII(text, "no")) {
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cancel_id_ = id;
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return GTK_STOCK_NO;
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} else if (LowerCaseEqualsASCII(text, "ok")) {
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return GTK_STOCK_OK;
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} else if (LowerCaseEqualsASCII(text, "yes")) {
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return GTK_STOCK_YES;
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} else {
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return text.c_str();
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}
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}
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void RunAsynchronous(const MessageBoxCallback& callback) {
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callback_ = callback;
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g_signal_connect(dialog_, "delete-event",
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G_CALLBACK(gtk_widget_hide_on_delete), NULL);
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g_signal_connect(dialog_, "response",
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G_CALLBACK(OnResponseDialogThunk), this);
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gtk_widget_show_all(dialog_);
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}
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CHROMEGTK_CALLBACK_1(MessageBox, void, OnResponseDialog, int);
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GtkWidget* dialog() const { return dialog_; }
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int cancel_id() const { return cancel_id_; }
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private:
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GtkWidget* dialog_;
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MessageBoxCallback callback_;
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// The id to return when the dialog is closed without pressing buttons.
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int cancel_id_;
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DISALLOW_COPY_AND_ASSIGN(MessageBox);
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};
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void MessageBox::OnResponseDialog(GtkWidget* widget, int response) {
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gtk_widget_hide_all(dialog_);
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if (response < 0)
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callback_.Run(cancel_id_);
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else
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callback_.Run(response);
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delete this;
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}
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} // namespace
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int ShowMessageBox(NativeWindow* parent_window,
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MessageBoxType type,
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const std::vector<std::string>& buttons,
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const std::string& title,
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const std::string& message,
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const std::string& detail) {
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return 0;
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MessageBox message_box(parent_window, type, buttons, title, message, detail);
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gtk_widget_show_all(message_box.dialog());
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int response = gtk_dialog_run(GTK_DIALOG(message_box.dialog()));
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if (response < 0)
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return message_box.cancel_id();
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else
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return response;
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}
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void ShowMessageBox(NativeWindow* parent_window,
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const std::string& message,
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const std::string& detail,
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const MessageBoxCallback& callback) {
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callback.Run(0);
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MessageBox* message_box = new MessageBox(
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parent_window, type, buttons, title, message, detail);
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message_box->RunAsynchronous(callback);
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}
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} // namespace atom
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@ -9,7 +9,7 @@ import tarfile
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from lib.config import LIBCHROMIUMCONTENT_COMMIT, BASE_URL, NODE_VERSION
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from lib.util import scoped_cwd, rm_rf, get_atom_shell_version, make_zip, \
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safe_mkdir, safe_unlink, execute
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safe_mkdir, execute
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ATOM_SHELL_VRESION = get_atom_shell_version()
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