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demo: Add GTK+ test application

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Bastien Nocera 2018-10-08 16:33:04 +02:00
parent f7173e6645
commit 29461fa910
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514
demo/gtk-libfprint-test.c Normal file
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/*
* Example libfprint GTK+ image capture program
* Copyright (C) 2018 Bastien Nocera <hadess@hadess.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <gtk/gtk.h>
#include <libfprint/fprint.h>
#include "loop.h"
typedef GtkApplication LibfprintDemo;
typedef GtkApplicationClass LibfprintDemoClass;
G_DEFINE_TYPE (LibfprintDemo, libfprint_demo, GTK_TYPE_APPLICATION)
typedef enum {
IMAGE_DISPLAY_NONE = 0,
IMAGE_DISPLAY_MINUTIAE = 1 << 0,
IMAGE_DISPLAY_BINARY = 1 << 1
} ImageDisplayFlags;
typedef struct {
GtkApplicationWindow parent_instance;
GtkWidget *header_bar;
GtkWidget *mode_stack;
GtkWidget *capture_button;
GtkWidget *capture_image;
GtkWidget *spinner;
GtkWidget *instructions;
struct fp_dscv_dev *ddev;
struct fp_dev *dev;
struct fp_img *img;
ImageDisplayFlags img_flags;
} LibfprintDemoWindow;
typedef GtkApplicationWindowClass LibfprintDemoWindowClass;
G_DEFINE_TYPE (LibfprintDemoWindow, libfprint_demo_window, GTK_TYPE_APPLICATION_WINDOW)
typedef enum {
EMPTY_MODE,
NOIMAGING_MODE,
CAPTURE_MODE,
SPINNER_MODE,
ERROR_MODE
} LibfprintDemoMode;
static void libfprint_demo_set_mode (LibfprintDemoWindow *win,
LibfprintDemoMode mode);
static void
pixbuf_destroy (guchar *pixels, gpointer data)
{
if (pixels == NULL)
return;
g_free (pixels);
}
static unsigned char *
img_to_rgbdata (struct fp_img *img,
int width,
int height)
{
int size = width * height;
unsigned char *imgdata = fp_img_get_data (img);
unsigned char *rgbdata = g_malloc (size * 3);
size_t i;
size_t rgb_offset = 0;
for (i = 0; i < size; i++) {
unsigned char pixel = imgdata[i];
rgbdata[rgb_offset++] = pixel;
rgbdata[rgb_offset++] = pixel;
rgbdata[rgb_offset++] = pixel;
}
return rgbdata;
}
static void
plot_minutiae (unsigned char *rgbdata,
int width,
int height,
struct fp_minutia **minlist,
int nr_minutiae)
{
int i;
#define write_pixel(num) do { \
rgbdata[((num) * 3)] = 0xff; \
rgbdata[((num) * 3) + 1] = 0; \
rgbdata[((num) * 3) + 2] = 0; \
} while(0)
for (i = 0; i < nr_minutiae; i++) {
struct fp_minutia *min = minlist[i];
int x, y;
size_t pixel_offset;
fp_minutia_get_coords(min, &x, &y);
pixel_offset = (y * width) + x;
write_pixel(pixel_offset - 2);
write_pixel(pixel_offset - 1);
write_pixel(pixel_offset);
write_pixel(pixel_offset + 1);
write_pixel(pixel_offset + 2);
write_pixel(pixel_offset - (width * 2));
write_pixel(pixel_offset - (width * 1) - 1);
write_pixel(pixel_offset - (width * 1));
write_pixel(pixel_offset - (width * 1) + 1);
write_pixel(pixel_offset + (width * 1) - 1);
write_pixel(pixel_offset + (width * 1));
write_pixel(pixel_offset + (width * 1) + 1);
write_pixel(pixel_offset + (width * 2));
}
}
static GdkPixbuf *
img_to_pixbuf (struct fp_img *img,
ImageDisplayFlags flags)
{
int width;
int height;
unsigned char *rgbdata;
width = fp_img_get_width (img);
height = fp_img_get_height (img);
if (flags & IMAGE_DISPLAY_BINARY) {
struct fp_img *binary;
binary = fp_img_binarize (img);
rgbdata = img_to_rgbdata (binary, width, height);
fp_img_free (binary);
} else {
rgbdata = img_to_rgbdata (img, width, height);
}
if (flags & IMAGE_DISPLAY_MINUTIAE) {
struct fp_minutia **minlist;
int nr_minutiae;
minlist = fp_img_get_minutiae (img, &nr_minutiae);
plot_minutiae (rgbdata, width, height, minlist, nr_minutiae);
}
return gdk_pixbuf_new_from_data (rgbdata, GDK_COLORSPACE_RGB,
FALSE, 8, width, height,
width * 3, pixbuf_destroy,
NULL);
}
static void
update_image (LibfprintDemoWindow *win)
{
GdkPixbuf *pixbuf;
if (win->img == NULL) {
gtk_image_clear (GTK_IMAGE (win->capture_image));
return;
}
g_debug ("Updating image, minutiae %s, binary mode %s",
win->img_flags & IMAGE_DISPLAY_MINUTIAE ? "shown" : "hidden",
win->img_flags & IMAGE_DISPLAY_BINARY ? "on" : "off");
pixbuf = img_to_pixbuf (win->img, win->img_flags);
gtk_image_set_from_pixbuf (GTK_IMAGE (win->capture_image), pixbuf);
g_object_unref (pixbuf);
}
static void
libfprint_demo_set_spinner_label (LibfprintDemoWindow *win,
const char *message)
{
char *label;
label = g_strdup_printf ("<b><span size=\"large\">%s</span></b>", message);
gtk_label_set_markup (GTK_LABEL (win->instructions), label);
g_free (label);
}
static void
libfprint_demo_set_capture_label (LibfprintDemoWindow *win)
{
struct fp_driver *drv;
enum fp_scan_type scan_type;
const char *message;
drv = fp_dscv_dev_get_driver (win->ddev);
scan_type = fp_driver_get_scan_type(drv);
switch (scan_type) {
case FP_SCAN_TYPE_PRESS:
message = "Place your finger on the fingerprint reader";
break;
case FP_SCAN_TYPE_SWIPE:
message = "Swipe your finger across the fingerprint reader";
break;
default:
g_assert_not_reached ();
}
libfprint_demo_set_spinner_label (win, message);
}
static void
dev_capture_start_cb (struct fp_dev *dev,
int result,
struct fp_img *img,
void *user_data)
{
LibfprintDemoWindow *win = user_data;
if (result < 0) {
libfprint_demo_set_mode (win, ERROR_MODE);
return;
}
fp_async_capture_stop (dev, NULL, NULL);
win->img = img;
update_image (win);
libfprint_demo_set_mode (win, CAPTURE_MODE);
}
static void
dev_open_cb (struct fp_dev *dev, int status, void *user_data)
{
LibfprintDemoWindow *win = user_data;
int r;
if (status < 0) {
libfprint_demo_set_mode (win, ERROR_MODE);
return;
}
libfprint_demo_set_capture_label (win);
win->dev = dev;
r = fp_async_capture_start (win->dev, FALSE, dev_capture_start_cb, user_data);
if (r < 0) {
g_warning ("fp_async_capture_start failed: %d", r);
libfprint_demo_set_mode (win, ERROR_MODE);
return;
}
}
static void
activate_capture (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
LibfprintDemoWindow *win = user_data;
int r;
libfprint_demo_set_mode (win, SPINNER_MODE);
g_clear_pointer (&win->img, fp_img_free);
if (win->dev != NULL) {
dev_open_cb (win->dev, 0, user_data);
return;
}
libfprint_demo_set_spinner_label (win, "Opening fingerprint reader");
r = fp_async_dev_open (win->ddev, dev_open_cb, user_data);
if (r < 0) {
g_warning ("fp_async_dev_open failed: %d", r);
libfprint_demo_set_mode (win, ERROR_MODE);
return;
}
}
static void
activate_quit (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GtkApplication *app = user_data;
GtkWidget *win;
GList *list, *next;
list = gtk_application_get_windows (app);
while (list)
{
win = list->data;
next = list->next;
gtk_widget_destroy (GTK_WIDGET (win));
list = next;
}
}
static void
activate_show_minutiae (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
LibfprintDemoWindow *win = user_data;
GVariant *state;
gboolean new_state;
state = g_action_get_state (G_ACTION (action));
new_state = !g_variant_get_boolean (state);
g_action_change_state (G_ACTION (action), g_variant_new_boolean (new_state));
g_variant_unref (state);
if (new_state)
win->img_flags |= IMAGE_DISPLAY_MINUTIAE;
else
win->img_flags &= ~IMAGE_DISPLAY_MINUTIAE;
update_image (win);
}
static void
activate_show_binary (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
LibfprintDemoWindow *win = user_data;
GVariant *state;
gboolean new_state;
state = g_action_get_state (G_ACTION (action));
new_state = !g_variant_get_boolean (state);
g_action_change_state (G_ACTION (action), g_variant_new_boolean (new_state));
g_variant_unref (state);
if (new_state)
win->img_flags |= IMAGE_DISPLAY_BINARY;
else
win->img_flags &= ~IMAGE_DISPLAY_BINARY;
update_image (win);
}
static void
change_show_minutiae_state (GSimpleAction *action,
GVariant *state,
gpointer user_data)
{
g_simple_action_set_state (action, state);
}
static void
change_show_binary_state (GSimpleAction *action,
GVariant *state,
gpointer user_data)
{
g_simple_action_set_state (action, state);
}
static GActionEntry app_entries[] = {
{ "quit", activate_quit, NULL, NULL, NULL },
};
static GActionEntry win_entries[] = {
{ "show-minutiae", activate_show_minutiae, NULL, "false", change_show_minutiae_state },
{ "show-binary", activate_show_binary, NULL, "false", change_show_binary_state },
{ "capture", activate_capture, NULL, NULL, NULL }
};
static void
activate (GApplication *app)
{
LibfprintDemoWindow *window;
window = g_object_new (libfprint_demo_window_get_type (),
"application", app,
NULL);
gtk_widget_show (GTK_WIDGET (window));
}
static void
libfprint_demo_set_mode (LibfprintDemoWindow *win,
LibfprintDemoMode mode)
{
struct fp_driver *drv;
char *title;
switch (mode) {
case EMPTY_MODE:
gtk_stack_set_visible_child_name (GTK_STACK (win->mode_stack), "empty-mode");
gtk_widget_set_sensitive (win->capture_button, FALSE);
gtk_spinner_stop (GTK_SPINNER (win->spinner));
break;
case NOIMAGING_MODE:
gtk_stack_set_visible_child_name (GTK_STACK (win->mode_stack), "noimaging-mode");
gtk_widget_set_sensitive (win->capture_button, FALSE);
gtk_spinner_stop (GTK_SPINNER (win->spinner));
break;
case CAPTURE_MODE:
gtk_stack_set_visible_child_name (GTK_STACK (win->mode_stack), "capture-mode");
gtk_widget_set_sensitive (win->capture_button, TRUE);
drv = fp_dscv_dev_get_driver (win->ddev);
title = g_strdup_printf ("%s Test", fp_driver_get_full_name (drv));
gtk_header_bar_set_title (GTK_HEADER_BAR (win->header_bar), title);
g_free (title);
gtk_spinner_stop (GTK_SPINNER (win->spinner));
break;
case SPINNER_MODE:
gtk_stack_set_visible_child_name (GTK_STACK (win->mode_stack), "spinner-mode");
gtk_widget_set_sensitive (win->capture_button, FALSE);
gtk_spinner_start (GTK_SPINNER (win->spinner));
break;
case ERROR_MODE:
gtk_stack_set_visible_child_name (GTK_STACK (win->mode_stack), "error-mode");
gtk_widget_set_sensitive (win->capture_button, FALSE);
gtk_spinner_stop (GTK_SPINNER (win->spinner));
break;
default:
g_assert_not_reached ();
}
}
static void
libfprint_demo_init (LibfprintDemo *app)
{
g_action_map_add_action_entries (G_ACTION_MAP (app),
app_entries, G_N_ELEMENTS (app_entries),
app);
}
static void
libfprint_demo_class_init (LibfprintDemoClass *class)
{
GApplicationClass *app_class = G_APPLICATION_CLASS (class);
app_class->activate = activate;
}
static void
libfprint_demo_window_init (LibfprintDemoWindow *window)
{
struct fp_dscv_dev **discovered_devs;
gtk_widget_init_template (GTK_WIDGET (window));
gtk_window_set_default_size (GTK_WINDOW (window), 700, 500);
g_action_map_add_action_entries (G_ACTION_MAP (window),
win_entries, G_N_ELEMENTS (win_entries),
window);
if (fp_init () < 0) {
libfprint_demo_set_mode (window, ERROR_MODE);
return;
}
setup_pollfds ();
discovered_devs = fp_discover_devs();
if (!discovered_devs)
return;
if (!fp_driver_supports_imaging(fp_dscv_dev_get_driver(discovered_devs[0]))) {
libfprint_demo_set_mode (window, NOIMAGING_MODE);
return;
}
window->ddev = discovered_devs[0];
libfprint_demo_set_mode (window, CAPTURE_MODE);
}
static void
libfprint_demo_window_class_init (LibfprintDemoWindowClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
gtk_widget_class_set_template_from_resource (widget_class, "/libfprint_demo/gtk-libfprint-test.ui");
gtk_widget_class_bind_template_child (widget_class, LibfprintDemoWindow, header_bar);
gtk_widget_class_bind_template_child (widget_class, LibfprintDemoWindow, mode_stack);
gtk_widget_class_bind_template_child (widget_class, LibfprintDemoWindow, capture_button);
gtk_widget_class_bind_template_child (widget_class, LibfprintDemoWindow, capture_image);
gtk_widget_class_bind_template_child (widget_class, LibfprintDemoWindow, spinner);
gtk_widget_class_bind_template_child (widget_class, LibfprintDemoWindow, instructions);
//FIXME setup dispose
}
int main (int argc, char **argv)
{
GtkApplication *app;
app = GTK_APPLICATION (g_object_new (libfprint_demo_get_type (),
"application-id", "org.freedesktop.libfprint.Demo",
"flags", G_APPLICATION_FLAGS_NONE,
NULL));
return g_application_run (G_APPLICATION (app), 0, NULL);
}

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demo/gtk-libfprint-test.gresource.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<gresources>
<gresource prefix="/libfprint_demo">
<file>gtk-libfprint-test.ui</file>
</gresource>
</gresources>

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demo/gtk-libfprint-test.ui Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.22.1 -->
<interface>
<requires lib="gtk+" version="3.20"/>
<template class="LibfprintDemoWindow" parent="GtkApplicationWindow">
<property name="can_focus">False</property>
<property name="default_width">500</property>
<property name="default_height">400</property>
<property name="show_menubar">False</property>
<child type="titlebar">
<object class="GtkHeaderBar" id="header_bar">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="title">Fingerprint Reader Test</property>
<property name="subtitle">Capture test</property>
<property name="show_close_button">True</property>
<child>
<object class="GtkMenuButton" id="option-menu-button">
<property name="visible">True</property>
<property name="sensitive">False</property>
<property name="can_focus">True</property>
<property name="receives_default">False</property>
<property name="valign">center</property>
<property name="menu-model">options-menu</property>
<child>
<object class="GtkImage">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="icon_name">open-menu-symbolic</property>
</object>
</child>
</object>
<packing>
<property name="pack_type">end</property>
</packing>
</child>
<child>
<object class="GtkButton" id="capture_button">
<property name="visible">True</property>
<property name="sensitive">False</property>
<property name="can_focus">True</property>
<property name="receives_default">False</property>
<property name="valign">center</property>
<property name="action_name">win.capture</property>
<child>
<object class="GtkLabel" id="capture_label">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">_Capture</property>
<property name="use_underline">True</property>
</object>
</child>
<style>
<class name="text-button"/>
</style>
</object>
<packing>
<property name="pack_type">end</property>
</packing>
</child>
</object>
</child>
<child>
<object class="GtkStack" id="mode_stack">
<property name="visible">True</property>
<property name="can_focus">False</property>
<child>
<object class="GtkGrid" id="spinner-mode">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="halign">center</property>
<property name="valign">center</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="orientation">vertical</property>
<property name="row_spacing">12</property>
<child>
<object class="GtkSpinner" id="spinner">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_bottom">9</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="instructions">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_top">9</property>
<property name="label" translatable="yes">&lt;b&gt;&lt;span size="large"&gt;Please press finger on reader&lt;/span&gt;&lt;/b&gt;</property>
<property name="use_markup">True</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<style>
<class name="dim-label"/>
</style>
</object>
<packing>
<property name="name">spinner-mode</property>
<property name="title">spinner-mode</property>
</packing>
</child>
<child>
<object class="GtkGrid" id="empty-mode">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="halign">center</property>
<property name="valign">center</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="orientation">vertical</property>
<property name="row_spacing">12</property>
<child>
<object class="GtkImage">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_bottom">9</property>
<property name="pixel_size">192</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_top">9</property>
<property name="label" translatable="yes">&lt;b&gt;&lt;span size="large"&gt;No fingerprint readers found&lt;/span&gt;&lt;/b&gt;</property>
<property name="use_markup">True</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Please connect a supported fingerprint reader and start the application again</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">2</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<style>
<class name="dim-label"/>
</style>
</object>
<packing>
<property name="name">empty-mode</property>
<property name="title">empty-mode</property>
</packing>
</child>
<child>
<object class="GtkAspectFrame" id="capture-mode">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label_xalign">0</property>
<property name="shadow_type">none</property>
<property name="ratio">1.2999999523162842</property>
<child>
<object class="GtkImage" id="capture_image">
<property name="visible">True</property>
<property name="can_focus">False</property>
</object>
</child>
</object>
<packing>
<property name="name">capture-mode</property>
<property name="title">capture-mode</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkGrid" id="error-mode">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="halign">center</property>
<property name="valign">center</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="orientation">vertical</property>
<property name="row_spacing">12</property>
<child>
<object class="GtkImage">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_bottom">9</property>
<property name="pixel_size">192</property>
<property name="icon_name">dialog-warning-symbolic</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_top">9</property>
<property name="label" translatable="yes">&lt;b&gt;&lt;span size="large"&gt;An error occurred trying to access the fingerprint reader&lt;/span&gt;&lt;/b&gt;</property>
<property name="use_markup">True</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Please consult the debugging output before restarting the application</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">2</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<style>
<class name="dim-label"/>
</style>
</object>
<packing>
<property name="name">error-mode</property>
<property name="title">error-mode</property>
<property name="position">2</property>
</packing>
</child>
<child>
<object class="GtkGrid" id="noimaging-mode">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="halign">center</property>
<property name="valign">center</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<property name="orientation">vertical</property>
<property name="row_spacing">12</property>
<child>
<object class="GtkImage">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_bottom">9</property>
<property name="pixel_size">192</property>
<property name="icon_name">scanner-symbolic</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="margin_top">9</property>
<property name="label" translatable="yes">&lt;b&gt;&lt;span size="large"&gt;Fingerprint reader does not support capturing images&lt;/span&gt;&lt;/b&gt;</property>
<property name="use_markup">True</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Please connect a supported fingerprint reader and start the application again</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">2</property>
</packing>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<child>
<placeholder/>
</child>
<style>
<class name="dim-label"/>
</style>
</object>
<packing>
<property name="name">noimaging-mode</property>
<property name="title">noimaging-mode</property>
<property name="position">3</property>
</packing>
</child>
</object>
</child>
</template>
<menu id="options-menu">
<section>
<item>
<attribute name="label" translatable="yes">Show Minutiae</attribute>
<attribute name="action">win.show-minutiae</attribute>
</item>
<item>
<attribute name="label" translatable="yes">Show Binary</attribute>
<attribute name="action">win.show-binary</attribute>
</item>
</section>
</menu>
</interface>

196
demo/loop.c Normal file
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@ -0,0 +1,196 @@
/*
* fprint D-Bus daemon
* Copyright (C) 2008 Daniel Drake <dsd@gentoo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <glib.h>
#include <libfprint/fprint.h>
#include <poll.h>
#include <stdlib.h>
#include "loop.h"
struct fdsource {
GSource source;
GSList *pollfds;
};
static gboolean source_prepare(GSource *source, gint *timeout)
{
int r;
struct timeval tv;
r = fp_get_next_timeout(&tv);
if (r == 0) {
*timeout = -1;
return FALSE;
}
if (!timerisset(&tv))
return TRUE;
*timeout = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
return FALSE;
}
static gboolean source_check(GSource *source)
{
struct fdsource *_fdsource = (struct fdsource *) source;
GSList *l;
struct timeval tv;
int r;
if (!_fdsource->pollfds)
return FALSE;
for (l = _fdsource->pollfds; l != NULL; l = l->next) {
GPollFD *pollfd = l->data;
if (pollfd->revents)
return TRUE;
}
r = fp_get_next_timeout(&tv);
if (r == 1 && !timerisset(&tv))
return TRUE;
return FALSE;
}
static gboolean source_dispatch(GSource *source, GSourceFunc callback,
gpointer data)
{
struct timeval zerotimeout = {
.tv_sec = 0,
.tv_usec = 0,
};
/* FIXME error handling */
fp_handle_events_timeout(&zerotimeout);
/* FIXME whats the return value used for? */
return TRUE;
}
static void source_finalize(GSource *source)
{
struct fdsource *_fdsource = (struct fdsource *) source;
GSList *l;
if (!_fdsource->pollfds)
return;
for (l = _fdsource->pollfds; l != NULL; l = l->next) {
GPollFD *pollfd = l->data;
g_source_remove_poll((GSource *) _fdsource, pollfd);
g_slice_free(GPollFD, pollfd);
_fdsource->pollfds = g_slist_delete_link(_fdsource->pollfds, l);
}
g_slist_free(_fdsource->pollfds);
}
static GSourceFuncs sourcefuncs = {
.prepare = source_prepare,
.check = source_check,
.dispatch = source_dispatch,
.finalize = source_finalize,
};
static struct fdsource *fdsource = NULL;
static void pollfd_add(int fd, short events)
{
GPollFD *pollfd;
pollfd = g_slice_new(GPollFD);
pollfd->fd = fd;
pollfd->events = 0;
pollfd->revents = 0;
if (events & POLLIN)
pollfd->events |= G_IO_IN;
if (events & POLLOUT)
pollfd->events |= G_IO_OUT;
fdsource->pollfds = g_slist_prepend(fdsource->pollfds, pollfd);
g_source_add_poll((GSource *) fdsource, pollfd);
}
static void pollfd_added_cb(int fd, short events)
{
g_debug("now monitoring fd %d", fd);
pollfd_add(fd, events);
}
static void pollfd_removed_cb(int fd)
{
GSList *l;
g_debug("no longer monitoring fd %d", fd);
if (!fdsource->pollfds) {
g_debug("cannot remove from list as list is empty?");
return;
}
for (l = fdsource->pollfds; l != NULL; l = l->next) {
GPollFD *pollfd = l->data;
if (pollfd->fd != fd)
continue;
g_source_remove_poll((GSource *) fdsource, pollfd);
g_slice_free(GPollFD, pollfd);
fdsource->pollfds = g_slist_delete_link(fdsource->pollfds, l);
return;
}
g_error("couldn't find fd %d in list\n", fd);
}
int setup_pollfds(void)
{
ssize_t numfds;
size_t i;
struct fp_pollfd *fpfds;
GSource *gsource;
gsource = g_source_new(&sourcefuncs, sizeof(struct fdsource));
fdsource = (struct fdsource *) gsource;
fdsource->pollfds = NULL;
numfds = fp_get_pollfds(&fpfds);
if (numfds < 0) {
if (fpfds)
free(fpfds);
return (int) numfds;
} else if (numfds > 0) {
for (i = 0; i < numfds; i++) {
struct fp_pollfd *fpfd = &fpfds[i];
pollfd_add(fpfd->fd, fpfd->events);
}
}
free(fpfds);
fp_set_pollfd_notifiers(pollfd_added_cb, pollfd_removed_cb);
g_source_attach(gsource, NULL);
return 0;
}

27
demo/loop.h Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (C) 2008 Daniel Drake <dsd@gentoo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef POLL_H
#define POLL_H
int setup_pollfds(void);
#endif

17
demo/meson.build Normal file
View file

@ -0,0 +1,17 @@
gtk_test_resources = gnome.compile_resources('gtk-test-resources', 'gtk-libfprint-test.gresource.xml',
source_dir : '.',
c_name : 'gtk_test')
prefix = get_option('prefix')
bindir = join_paths(prefix, get_option('bindir'))
executable('gtk-libfprint-test',
[ 'gtk-libfprint-test.c', 'loop.c', 'loop.h', gtk_test_resources ],
dependencies: [ libfprint_dep, gtk_dep ],
include_directories: [
root_inc,
],
c_args: [ common_cflags,
'-DPACKAGE_VERSION="' + meson.project_version() + '"' ],
install: true,
install_dir: bindir)

12
meson.build
View file

@ -111,6 +111,15 @@ if get_option('x11-examples')
endif
endif
if get_option('gtk-examples')
gnome = import('gnome')
gtk_dep = dependency('gtk+-3.0', required: false)
if not gtk_dep.found()
error('GTK+ 3.x is required for GTK+ examples')
endif
endif
libfprint_conf.set('API_EXPORTED', '__attribute__((visibility("default")))')
configure_file(output: 'config.h', configuration: libfprint_conf)
@ -120,6 +129,9 @@ if get_option('doc')
gnome = import('gnome')
subdir('doc')
endif
if get_option('gtk-examples')
subdir('demo')
endif
pkgconfig = import('pkgconfig')
pkgconfig.generate(

4
meson_options.txt
View file

@ -14,6 +14,10 @@ option('x11-examples',
description: 'Whether to build X11 example applications',
type: 'boolean',
value: true)
option('gtk-examples',
description: 'Whether to build GTK+ example applications',
type: 'boolean',
value: true)
option('doc',
description: 'Whether to build the API documentation',
type: 'boolean',