Initial commit
This commit is contained in:
commit
97781f6af4
GPG Key ID:
A0420B94F92B9493
3
.gitmodules
vendored
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3
.gitmodules
vendored
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@ -0,0 +1,3 @@
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|||||||
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[submodule "wuffs-mirror-release-c"]
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||||||
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path = wuffs-mirror-release-c
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url = https://github.com/google/wuffs-mirror-release-c
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||||||
12
LICENSE
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12
LICENSE
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@ -0,0 +1,12 @@
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|||||||
|
Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
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||||||
|
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||||||
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Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
purpose with or without fee is hereby granted.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||||
|
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||||
|
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||||
|
SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||||
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||||||
|
OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||||||
|
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||||
39
README.adoc
Normal file
39
README.adoc
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@ -0,0 +1,39 @@
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|
fastiv
|
||||||
|
======
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||||||
|
|
||||||
|
'fastiv' is a fast image viewer, supporting BMP, PNG, GIF and JPEG.
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||||||
|
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||||||
|
It is meant to be a viable replacement for Eye of GNOME, which is slow and likes
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||||||
|
to break on huge pictures. Memory efficiency is specifically a non-goal.
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||||||
|
|
||||||
|
Packages
|
||||||
|
--------
|
||||||
|
Regular releases are sporadic. git master should be stable enough. You can get
|
||||||
|
a package with the latest development version from Archlinux's AUR.
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||||||
|
|
||||||
|
Building and Running
|
||||||
|
--------------------
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||||||
|
Build dependencies: Meson, pkg-config +
|
||||||
|
Runtime dependencies: gtk+-3.0, libturbojpeg
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||||||
|
|
||||||
|
$ git clone --recursive https://git.janouch.name/p/fastiv.git
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||||||
|
$ meson builddir
|
||||||
|
$ cd builddir
|
||||||
|
$ meson compile
|
||||||
|
|
||||||
|
To install the application, you can do:
|
||||||
|
|
||||||
|
# meson install
|
||||||
|
|
||||||
|
Contributing and Support
|
||||||
|
------------------------
|
||||||
|
Use https://git.janouch.name/p/fastiv to report any bugs, request features,
|
||||||
|
or submit pull requests. `git send-email` is tolerated. If you want to discuss
|
||||||
|
the project, feel free to join me at ircs://irc.janouch.name, channel #dev.
|
||||||
|
|
||||||
|
Bitcoin donations are accepted at: 12r5uEWEgcHC46xd64tt3hHt9EUvYYDHe9
|
||||||
|
|
||||||
|
License
|
||||||
|
-------
|
||||||
|
This software is released under the terms of the 0BSD license, the text of which
|
||||||
|
is included within the package along with the list of authors.
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383
fastiv-view.c
Normal file
383
fastiv-view.c
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@ -0,0 +1,383 @@
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|
//
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||||||
|
// fastiv-view.c: fast image viewer - view widget
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||||||
|
//
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||||||
|
// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
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||||||
|
//
|
||||||
|
// Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
// purpose with or without fee is hereby granted.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||||
|
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||||
|
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||||
|
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||||
|
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||||||
|
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||||||
|
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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||||||
|
//
|
||||||
|
|
||||||
|
#define WUFFS_IMPLEMENTATION
|
||||||
|
#define WUFFS_CONFIG__MODULES
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|
#define WUFFS_CONFIG__MODULE__ADLER32
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||||||
|
#define WUFFS_CONFIG__MODULE__BASE
|
||||||
|
#define WUFFS_CONFIG__MODULE__BMP
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||||||
|
#define WUFFS_CONFIG__MODULE__CRC32
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||||||
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#define WUFFS_CONFIG__MODULE__DEFLATE
|
||||||
|
#define WUFFS_CONFIG__MODULE__GIF
|
||||||
|
#define WUFFS_CONFIG__MODULE__LZW
|
||||||
|
#define WUFFS_CONFIG__MODULE__PNG
|
||||||
|
#define WUFFS_CONFIG__MODULE__ZLIB
|
||||||
|
|
||||||
|
#include "wuffs-mirror-release-c/release/c/wuffs-v0.3.c"
|
||||||
|
#include <turbojpeg.h>
|
||||||
|
|
||||||
|
#include "fastiv-view.h"
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||||||
|
|
||||||
|
struct _FastivView {
|
||||||
|
GtkWidget parent_instance;
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||||||
|
cairo_surface_t *surface;
|
||||||
|
// TODO(p): Eventually, we'll want to have the zoom level (scale) here,
|
||||||
|
// and some zoom-to-fit indication.
|
||||||
|
};
|
||||||
|
|
||||||
|
G_DEFINE_TYPE(FastivView, fastiv_view, GTK_TYPE_WIDGET)
|
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|
|
||||||
|
static void
|
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|
fastiv_view_finalize(GObject *gobject)
|
||||||
|
{
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|
FastivView *self = FASTIV_VIEW(gobject);
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|
cairo_surface_destroy(self->surface);
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|
|
||||||
|
G_OBJECT_CLASS(fastiv_view_parent_class)->finalize(gobject);
|
||||||
|
}
|
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|
|
||||||
|
static void
|
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|
fastiv_view_get_preferred_height(GtkWidget *widget,
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|
gint *minimum, gint *natural)
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|
{
|
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|
*minimum = 0;
|
||||||
|
*natural = 0;
|
||||||
|
|
||||||
|
// TODO(p): Times the zoom.
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FastivView *self = FASTIV_VIEW(widget);
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|
if (self->surface)
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|
*natural = cairo_image_surface_get_height(self->surface);
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||||||
|
}
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|
|
||||||
|
static void
|
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|
fastiv_view_get_preferred_width(GtkWidget *widget,
|
||||||
|
gint *minimum, gint *natural)
|
||||||
|
{
|
||||||
|
*minimum = 0;
|
||||||
|
*natural = 0;
|
||||||
|
|
||||||
|
// TODO(p): Times the zoom.
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|
FastivView *self = FASTIV_VIEW(widget);
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|
if (self->surface)
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|
*natural = cairo_image_surface_get_width(self->surface);
|
||||||
|
}
|
||||||
|
|
||||||
|
static gboolean
|
||||||
|
fastiv_view_draw(GtkWidget *widget, cairo_t *cr)
|
||||||
|
{
|
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|
FastivView *self = FASTIV_VIEW(widget);
|
||||||
|
if (!self->surface)
|
||||||
|
return TRUE;
|
||||||
|
|
||||||
|
// TODO(p): Times the zoom.
|
||||||
|
cairo_set_source_surface(cr, self->surface, 0, 0);
|
||||||
|
cairo_paint(cr);
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
fastiv_view_class_init(FastivViewClass *klass)
|
||||||
|
{
|
||||||
|
GObjectClass *object_class = G_OBJECT_CLASS(klass);
|
||||||
|
object_class->finalize = fastiv_view_finalize;
|
||||||
|
|
||||||
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
|
||||||
|
widget_class->get_preferred_height = fastiv_view_get_preferred_height;
|
||||||
|
widget_class->get_preferred_width = fastiv_view_get_preferred_width;
|
||||||
|
widget_class->draw = fastiv_view_draw;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
fastiv_view_init(FastivView *self)
|
||||||
|
{
|
||||||
|
gtk_widget_set_has_window(GTK_WIDGET(self), FALSE);
|
||||||
|
}
|
||||||
|
|
||||||
|
// --- Picture loading ---------------------------------------------------------
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|
|
||||||
|
#define FASTIV_VIEW_ERROR fastiv_view_error_quark()
|
||||||
|
|
||||||
|
G_DEFINE_QUARK(fastiv-view-error-quark, fastiv_view_error)
|
||||||
|
|
||||||
|
enum FastivViewError {
|
||||||
|
FASTIV_VIEW_ERROR_OPEN,
|
||||||
|
};
|
||||||
|
|
||||||
|
static void
|
||||||
|
set_error(GError **error, const char *message)
|
||||||
|
{
|
||||||
|
g_set_error_literal(error,
|
||||||
|
FASTIV_VIEW_ERROR, FASTIV_VIEW_ERROR_OPEN, message);
|
||||||
|
}
|
||||||
|
|
||||||
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||||
|
|
||||||
|
// https://github.com/google/wuffs/blob/main/example/gifplayer/gifplayer.c
|
||||||
|
// is pure C, and a good reference. I can't use the auxiliary libraries,
|
||||||
|
// since they depend on C++, which is undesirable.
|
||||||
|
static cairo_surface_t *
|
||||||
|
open_wuffs(wuffs_base__image_decoder *dec,
|
||||||
|
wuffs_base__io_buffer src, GError **error)
|
||||||
|
{
|
||||||
|
wuffs_base__image_config cfg;
|
||||||
|
wuffs_base__status status =
|
||||||
|
wuffs_base__image_decoder__decode_image_config(dec, &cfg, &src);
|
||||||
|
if (!wuffs_base__status__is_ok(&status)) {
|
||||||
|
set_error(error, wuffs_base__status__message(&status));
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
if (!wuffs_base__image_config__is_valid(&cfg)) {
|
||||||
|
set_error(error, "invalid Wuffs image configuration");
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// We need to check because of the Cairo API.
|
||||||
|
uint32_t width = wuffs_base__pixel_config__width(&cfg.pixcfg);
|
||||||
|
uint32_t height = wuffs_base__pixel_config__height(&cfg.pixcfg);
|
||||||
|
if (width > INT_MAX || height > INT_MAX) {
|
||||||
|
set_error(error, "image dimensions overflow");
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// CAIRO_FORMAT_ARGB32: "The 32-bit quantities are stored native-endian.
|
||||||
|
// Pre-multiplied alpha is used."
|
||||||
|
// CAIRO_FORMAT_RGB{24,30}: analogous, not going to use these so far.
|
||||||
|
//
|
||||||
|
// Wuffs: /doc/note/pixel-formats.md specifies it as "memory order", which,
|
||||||
|
// for our purposes, means big endian. Currently useful formats, as per
|
||||||
|
// support within wuffs_base__pixel_swizzler__prepare__*():
|
||||||
|
// - WUFFS_BASE__PIXEL_FORMAT__ARGB_PREMUL: big-endian
|
||||||
|
// - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: little-endian
|
||||||
|
// - WUFFS_BASE__PIXEL_FORMAT__XRGB: big-endian
|
||||||
|
// - WUFFS_BASE__PIXEL_FORMAT__BGRX: little-endian
|
||||||
|
//
|
||||||
|
// TODO(p): Make Wuffs support RGB30 as a destination format,
|
||||||
|
// so far we only have WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE
|
||||||
|
// and in general, 16-bit depth swizzlers are stubbed.
|
||||||
|
wuffs_base__pixel_config__set(&cfg.pixcfg,
|
||||||
|
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
|
||||||
|
WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL,
|
||||||
|
#else
|
||||||
|
WUFFS_BASE__PIXEL_FORMAT__ARGB_PREMUL,
|
||||||
|
#endif
|
||||||
|
WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, width, height);
|
||||||
|
|
||||||
|
wuffs_base__slice_u8 workbuf = {0};
|
||||||
|
uint64_t workbuf_len_max_incl =
|
||||||
|
wuffs_base__image_decoder__workbuf_len(dec).max_incl;
|
||||||
|
if (workbuf_len_max_incl) {
|
||||||
|
workbuf = wuffs_base__malloc_slice_u8(malloc, workbuf_len_max_incl);
|
||||||
|
if (!workbuf.ptr) {
|
||||||
|
set_error(error, "failed to allocate a work buffer");
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
cairo_surface_t *surface =
|
||||||
|
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
|
||||||
|
if (!surface) {
|
||||||
|
set_error(error, "failed to allocate an image surface");
|
||||||
|
free(workbuf.ptr);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// CAIRO_STRIDE_ALIGNMENT is 4 bytes, so there will be no padding with
|
||||||
|
// ARGB/BGR/XRGB/BGRX. This function does not support a stride different
|
||||||
|
// from the width, maybe Wuffs internals do not either.
|
||||||
|
wuffs_base__pixel_buffer pb = {0};
|
||||||
|
status = wuffs_base__pixel_buffer__set_from_slice(&pb, &cfg.pixcfg,
|
||||||
|
wuffs_base__make_slice_u8(cairo_image_surface_get_data(surface),
|
||||||
|
cairo_image_surface_get_stride(surface) *
|
||||||
|
cairo_image_surface_get_height(surface)));
|
||||||
|
if (!wuffs_base__status__is_ok(&status)) {
|
||||||
|
set_error(error, wuffs_base__status__message(&status));
|
||||||
|
cairo_surface_destroy(surface);
|
||||||
|
free(workbuf.ptr);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
#if 0 // We're not using this right now.
|
||||||
|
wuffs_base__frame_config fc = {0};
|
||||||
|
status = wuffs_png__decoder__decode_frame_config(&dec, &fc, &src);
|
||||||
|
if (!wuffs_base__status__is_ok(&status)) {
|
||||||
|
set_error(error, wuffs_base__status__message(&status));
|
||||||
|
cairo_surface_destroy(surface);
|
||||||
|
free(workbuf.ptr);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Starting to modify pixel data directly. Probably an unnecessary call.
|
||||||
|
cairo_surface_flush(surface);
|
||||||
|
|
||||||
|
status = wuffs_base__image_decoder__decode_frame(dec, &pb, &src,
|
||||||
|
WUFFS_BASE__PIXEL_BLEND__SRC, workbuf, NULL);
|
||||||
|
if (!wuffs_base__status__is_ok(&status)) {
|
||||||
|
set_error(error, wuffs_base__status__message(&status));
|
||||||
|
cairo_surface_destroy(surface);
|
||||||
|
free(workbuf.ptr);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Pixel data has been written, need to let Cairo know.
|
||||||
|
cairo_surface_mark_dirty(surface);
|
||||||
|
|
||||||
|
free(workbuf.ptr);
|
||||||
|
return surface;
|
||||||
|
}
|
||||||
|
|
||||||
|
static cairo_surface_t *
|
||||||
|
open_wuffs_using(wuffs_base__image_decoder *(*allocate)(),
|
||||||
|
const gchar *data, gsize len, GError **error)
|
||||||
|
{
|
||||||
|
wuffs_base__image_decoder *dec = allocate();
|
||||||
|
if (!dec) {
|
||||||
|
set_error(error, "memory allocation failed or internal error");
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
cairo_surface_t *surface = open_wuffs(dec,
|
||||||
|
wuffs_base__ptr_u8__reader((uint8_t *) data, len, TRUE), error);
|
||||||
|
free(dec);
|
||||||
|
return surface;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
trivial_cmyk_to_bgra(unsigned char *p, int len)
|
||||||
|
{
|
||||||
|
// Inspired by gdk-pixbuf's io-jpeg.c:
|
||||||
|
//
|
||||||
|
// Assume that all YCCK/CMYK JPEG files use inverted CMYK, as Photoshop
|
||||||
|
// does, see https://bugzilla.gnome.org/show_bug.cgi?id=618096
|
||||||
|
while (len--) {
|
||||||
|
int c = p[0], m = p[1], y = p[2], k = p[3];
|
||||||
|
p[0] = k * y / 255;
|
||||||
|
p[1] = k * m / 255;
|
||||||
|
p[2] = k * c / 255;
|
||||||
|
p[3] = 255;
|
||||||
|
p += 4;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static cairo_surface_t *
|
||||||
|
open_libjpeg_turbo(const gchar *data, gsize len, GError **error)
|
||||||
|
{
|
||||||
|
tjhandle dec = tjInitDecompress();
|
||||||
|
if (!dec) {
|
||||||
|
set_error(error, tjGetErrorStr2(dec));
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
int width = 0, height = 0, subsampling = TJSAMP_444, colorspace = TJCS_RGB;
|
||||||
|
if (tjDecompressHeader3(dec, (const unsigned char *) data, len,
|
||||||
|
&width, &height, &subsampling, &colorspace)) {
|
||||||
|
set_error(error, tjGetErrorStr2(dec));
|
||||||
|
tjDestroy(dec);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
int pixel_format = (colorspace == TJCS_CMYK || colorspace == TJCS_YCCK)
|
||||||
|
? TJPF_CMYK
|
||||||
|
: (G_BYTE_ORDER == G_LITTLE_ENDIAN ? TJPF_BGRA : TJPF_ARGB);
|
||||||
|
|
||||||
|
cairo_surface_t *surface =
|
||||||
|
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
|
||||||
|
if (!surface) {
|
||||||
|
set_error(error, "failed to allocate an image surface");
|
||||||
|
tjDestroy(dec);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Starting to modify pixel data directly. Probably an unnecessary call.
|
||||||
|
cairo_surface_flush(surface);
|
||||||
|
|
||||||
|
int stride = cairo_image_surface_get_stride(surface);
|
||||||
|
if (tjDecompress2(dec, (const unsigned char *) data, len,
|
||||||
|
cairo_image_surface_get_data(surface), width, stride,
|
||||||
|
height, pixel_format, TJFLAG_ACCURATEDCT)) {
|
||||||
|
set_error(error, tjGetErrorStr2(dec));
|
||||||
|
cairo_surface_destroy(surface);
|
||||||
|
tjDestroy(dec);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// TODO(p): Support big-endian machines, too, those need ARGB ordering.
|
||||||
|
if (pixel_format == TJPF_CMYK) {
|
||||||
|
// CAIRO_STRIDE_ALIGNMENT is 4 bytes, so there will be no padding with
|
||||||
|
// ARGB/BGR/XRGB/BGRX.
|
||||||
|
trivial_cmyk_to_bgra(cairo_image_surface_get_data(surface),
|
||||||
|
width * height);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Pixel data has been written, need to let Cairo know.
|
||||||
|
cairo_surface_mark_dirty(surface);
|
||||||
|
|
||||||
|
tjDestroy(dec);
|
||||||
|
return surface;
|
||||||
|
}
|
||||||
|
|
||||||
|
// TODO(p): Progressive picture loading, or at least async/cancellable.
|
||||||
|
gboolean
|
||||||
|
fastiv_view_open(FastivView *self, const gchar *path, GError **error)
|
||||||
|
{
|
||||||
|
// TODO(p): Don't always load everything into memory, test type first,
|
||||||
|
// for which we only need the first 16 bytes right now.
|
||||||
|
gchar *data = NULL;
|
||||||
|
gsize len = 0;
|
||||||
|
if (!g_file_get_contents(path, &data, &len, error))
|
||||||
|
return FALSE;
|
||||||
|
|
||||||
|
wuffs_base__slice_u8 prefix =
|
||||||
|
wuffs_base__make_slice_u8((uint8_t *) data, len);
|
||||||
|
|
||||||
|
cairo_surface_t *surface = NULL;
|
||||||
|
switch (wuffs_base__magic_number_guess_fourcc(prefix)) {
|
||||||
|
case WUFFS_BASE__FOURCC__BMP:
|
||||||
|
// Note that BMP can redirect into another format, which is unsupported.
|
||||||
|
surface = open_wuffs_using(
|
||||||
|
wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder,
|
||||||
|
data, len, error);
|
||||||
|
break;
|
||||||
|
case WUFFS_BASE__FOURCC__GIF:
|
||||||
|
surface = open_wuffs_using(
|
||||||
|
wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder,
|
||||||
|
data, len, error);
|
||||||
|
break;
|
||||||
|
case WUFFS_BASE__FOURCC__PNG:
|
||||||
|
surface = open_wuffs_using(
|
||||||
|
wuffs_png__decoder__alloc_as__wuffs_base__image_decoder,
|
||||||
|
data, len, error);
|
||||||
|
break;
|
||||||
|
case WUFFS_BASE__FOURCC__JPEG:
|
||||||
|
surface = open_libjpeg_turbo(data, len, error);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
// TODO(p): Integrate gdk-pixbuf as a fallback (optional dependency).
|
||||||
|
set_error(error, "unsupported file type");
|
||||||
|
}
|
||||||
|
|
||||||
|
free(data);
|
||||||
|
if (!surface)
|
||||||
|
return FALSE;
|
||||||
|
|
||||||
|
if (self->surface)
|
||||||
|
cairo_surface_destroy(self->surface);
|
||||||
|
|
||||||
|
self->surface = surface;
|
||||||
|
gtk_widget_queue_resize(GTK_WIDGET(self));
|
||||||
|
return TRUE;
|
||||||
|
}
|
||||||
26
fastiv-view.h
Normal file
26
fastiv-view.h
Normal file
@ -0,0 +1,26 @@
|
|||||||
|
//
|
||||||
|
// fastiv-view.h: fast image viewer - view widget
|
||||||
|
//
|
||||||
|
// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
|
||||||
|
//
|
||||||
|
// Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
// purpose with or without fee is hereby granted.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||||
|
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||||
|
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||||
|
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||||
|
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||||||
|
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||||||
|
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||||
|
//
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <gtk/gtk.h>
|
||||||
|
|
||||||
|
#define FASTIV_TYPE_VIEW (fastiv_view_get_type ())
|
||||||
|
G_DECLARE_FINAL_TYPE(FastivView, fastiv_view, FASTIV, VIEW, GtkWidget)
|
||||||
|
|
||||||
|
/// Try to open the given file, synchronously, to be displayed by the widget.
|
||||||
|
gboolean fastiv_view_open(FastivView *self, const gchar *path, GError **error);
|
||||||
114
fastiv.c
Normal file
114
fastiv.c
Normal file
@ -0,0 +1,114 @@
|
|||||||
|
//
|
||||||
|
// fastiv.c: fast image viewer
|
||||||
|
//
|
||||||
|
// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
|
||||||
|
//
|
||||||
|
// Permission to use, copy, modify, and/or distribute this software for any
|
||||||
|
// purpose with or without fee is hereby granted.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||||
|
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||||
|
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||||
|
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||||
|
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
||||||
|
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
||||||
|
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||||
|
//
|
||||||
|
|
||||||
|
#include <gtk/gtk.h>
|
||||||
|
#include <glib.h>
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdarg.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <locale.h>
|
||||||
|
|
||||||
|
#include "config.h"
|
||||||
|
#include "fastiv-view.h"
|
||||||
|
|
||||||
|
// --- Utilities ---------------------------------------------------------------
|
||||||
|
|
||||||
|
static void
|
||||||
|
exit_fatal(const gchar *format, ...) G_GNUC_PRINTF(1, 2);
|
||||||
|
|
||||||
|
static void
|
||||||
|
exit_fatal(const gchar *format, ...)
|
||||||
|
{
|
||||||
|
va_list ap;
|
||||||
|
va_start(ap, format);
|
||||||
|
|
||||||
|
gchar *format_nl = g_strdup_printf("%s\n", format);
|
||||||
|
vfprintf(stderr, format_nl, ap);
|
||||||
|
free(format_nl);
|
||||||
|
|
||||||
|
va_end(ap);
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
|
||||||
|
// --- Main --------------------------------------------------------------------
|
||||||
|
|
||||||
|
struct {
|
||||||
|
// TODO(p): Add some state variables.
|
||||||
|
// - Directory filenames, index within the list.
|
||||||
|
} g;
|
||||||
|
|
||||||
|
int
|
||||||
|
main(int argc, char *argv[])
|
||||||
|
{
|
||||||
|
if (!setlocale(LC_CTYPE, ""))
|
||||||
|
exit_fatal("cannot set locale");
|
||||||
|
|
||||||
|
gboolean show_version = FALSE;
|
||||||
|
gchar **files = NULL;
|
||||||
|
const GOptionEntry options[] = {
|
||||||
|
{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &files,
|
||||||
|
NULL, "[FILE | DIRECTORY]..."},
|
||||||
|
{"version", 'V', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE,
|
||||||
|
&show_version, "output version information and exit", NULL},
|
||||||
|
{},
|
||||||
|
};
|
||||||
|
|
||||||
|
GError *error = NULL;
|
||||||
|
if (!gtk_init_with_args(&argc, &argv, " - fast image viewer",
|
||||||
|
options, NULL, &error))
|
||||||
|
exit_fatal("%s", error->message);
|
||||||
|
if (show_version) {
|
||||||
|
printf(PROJECT_NAME " " PROJECT_VERSION "\n");
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
GtkWidget *view = g_object_new(FASTIV_TYPE_VIEW, NULL);
|
||||||
|
GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
|
||||||
|
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
|
||||||
|
gtk_container_add(GTK_CONTAINER(window), view);
|
||||||
|
|
||||||
|
// TODO(p): Load directory entries, store in `g`.
|
||||||
|
// - Only when there's just one filename.
|
||||||
|
// - stat() it if it's a dictionary or a filename;
|
||||||
|
// can just blindly try to readdir(), followed by dirname and retry
|
||||||
|
// - But how do we filter these? We don't want to have non-images
|
||||||
|
// on the list.
|
||||||
|
// - When there are multiple, just take them verbatim as a list.
|
||||||
|
// - Not entirely sure about how much sense this makes,
|
||||||
|
// we might want to rather open several windows, or simply fork,
|
||||||
|
// or even disallow this completely.
|
||||||
|
gsize files_len = g_strv_length(files);
|
||||||
|
if (files_len) {
|
||||||
|
GDir *dir = NULL;
|
||||||
|
if ((dir = g_dir_open(files[0], 0, NULL))) {
|
||||||
|
const gchar *name = NULL;
|
||||||
|
while ((name = g_dir_read_name(dir)))
|
||||||
|
;
|
||||||
|
g_dir_close(dir);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!fastiv_view_open(FASTIV_VIEW(view), files[0], &error))
|
||||||
|
g_printerr("error: %s\n", error->message);
|
||||||
|
else
|
||||||
|
gtk_window_set_title(GTK_WINDOW(window), files[0]);
|
||||||
|
}
|
||||||
|
|
||||||
|
gtk_widget_show_all(window);
|
||||||
|
gtk_main();
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
19
meson.build
Normal file
19
meson.build
Normal file
@ -0,0 +1,19 @@
|
|||||||
|
project('fastiv', 'c', default_options : ['c_std=gnu99'], version : '0.1.0')
|
||||||
|
|
||||||
|
conf = configuration_data()
|
||||||
|
conf.set_quoted('PROJECT_NAME', meson.project_name())
|
||||||
|
conf.set_quoted('PROJECT_VERSION', meson.project_version())
|
||||||
|
configure_file(
|
||||||
|
output : 'config.h',
|
||||||
|
configuration : conf,
|
||||||
|
)
|
||||||
|
|
||||||
|
dependencies = [
|
||||||
|
dependency('gtk+-3.0'),
|
||||||
|
dependency('libturbojpeg'),
|
||||||
|
]
|
||||||
|
|
||||||
|
# TODO(p): we need to create and install a .desktop file
|
||||||
|
executable('fastiv', 'fastiv.c', 'fastiv-view.c',
|
||||||
|
install : true,
|
||||||
|
dependencies : [dependencies])
|
||||||
1
wuffs-mirror-release-c
Submodule
1
wuffs-mirror-release-c
Submodule
@ -0,0 +1 @@
|
|||||||
|
Subproject commit c9d2ed7983381ab659a56e0b8bc0d077e421f697
|
||||||
Loading…
Reference in New Issue
Block a user