#ifdef USE_IMLIB2
#include <Imlib2.h>
#endif
+#ifdef USE_LIBRSVG
+#include <librsvg/rsvg.h>
+#endif
#include <glib.h>
#define FLOOR(i) ((i) & (~0UL << FRACTION))
#define AVERAGE(a, b) (((((a) ^ (b)) & 0xfefefefeL) >> 1) + ((a) & (b)))
-void RrImagePicInit(RrImagePic *pic, const gchar *name,
- gint w, gint h, RrPixel32 *data)
+/************************************************************************
+ RrImagePic functions.
+
+ RrImagePics are pictures that are grouped together into RrImageSets. Each
+ RrImagePic in the set has the same logical image inside it, but they are
+ of different sizes. An RrImagePic can be an original (which comes from some
+ outside source, such as an image file), or resized from some other RrImagePic
+ to meet the needs of the user.
+**************************************************************************/
+
+
+/*! Set up an RrImagePic.
+ This does _not_ make a copy of the data. So the value of data must be
+ owned by the caller of this function, and not freed afterward.
+ This function does not allocate an RrImagePic, and can be used for setting
+ up a temporary RrImagePic on the stack. Such an object would then also
+ not be freed with RrImagePicFree.
+*/
+static void RrImagePicInit(RrImagePic *pic, gint w, gint h, RrPixel32 *data)
{
gint i;
pic->sum = 0;
for (i = w*h; i > 0; --i)
pic->sum += *(data++);
- pic->name = g_strdup(name);
}
+/*! Create a new RrImagePic from some picture data.
+ This makes a duplicate of the data.
+*/
+static RrImagePic* RrImagePicNew(gint w, gint h, RrPixel32 *data)
+{
+ RrImagePic *pic;
+
+ pic = g_slice_new(RrImagePic);
+ RrImagePicInit(pic, w, h, g_memdup(data, w*h*sizeof(RrPixel32)));
+ return pic;
+}
+
+
+/*! Destroy an RrImagePic.
+ This frees the RrImagePic object and everything inside it.
+*/
static void RrImagePicFree(RrImagePic *pic)
{
if (pic) {
g_free(pic->data);
- g_free(pic->name);
- g_free(pic);
+ g_slice_free(RrImagePic, pic);
+ }
+}
+
+/************************************************************************
+ RrImageSet functions.
+
+ RrImageSets hold a group of pictures, each of which represent the same logical
+ image, but are physically different sizes.
+ At any time, it may be discovered that two different RrImageSets are actually
+ holding the same logical image. At that time, they would be merged.
+ An RrImageSet holds both original images which come from an outside source,
+ and resized images, which are generated when requests for a specific size are
+ made, and kept around in case they are request again. There is a maximum
+ number of resized images that an RrImageSet will keep around, however.
+
+ Each RrImage points to a single RrImageSet, which keeps track of which
+ RrImages point to it. If two RrImageSets are merged, then the RrImages which
+ pointed to the two RrImageSets will all point at the resulting merged set.
+**************************************************************************/
+
+
+/*! Free an RrImageSet and the stuff inside it.
+ This should only occur when there are no more RrImages pointing to the set.
+*/
+static void RrImageSetFree(RrImageSet *self)
+{
+ GSList *it;
+ gint i;
+
+ if (self) {
+ g_assert(self->images == NULL);
+
+ /* remove all names associated with this RrImageSet */
+ for (it = self->names; it; it = g_slist_next(it)) {
+ g_hash_table_remove(self->cache->name_table, it->data);
+ g_free(it->data);
+ }
+ g_slist_free(self->names);
+
+ /* destroy the RrImagePic objects stored in the RrImageSet. they will
+ be keys in the cache to RrImageSet objects, so remove them from
+ the cache's pic_table as well. */
+ for (i = 0; i < self->n_original; ++i) {
+ g_hash_table_remove(self->cache->pic_table, self->original[i]);
+ RrImagePicFree(self->original[i]);
+ }
+ g_free(self->original);
+ for (i = 0; i < self->n_resized; ++i) {
+ g_hash_table_remove(self->cache->pic_table, self->resized[i]);
+ RrImagePicFree(self->resized[i]);
+ }
+ g_free(self->resized);
+
+ g_slice_free(RrImageSet, self);
+ }
+}
+
+/*! Remove a picture from an RrImageSet as a given position.
+ @param set The RrImageSet to remove the picture from.
+ @param i The index of the picture in the RrImageSet in the list of
+ originals (if @original is TRUE), or in the list of resized pictures (if
+ @original is FALSE).
+ @param original TRUE if the picture is an original, FALSE if it is a resized
+ version of another picture in the RrImageSet.
+ */
+static void RrImageSetRemovePictureAt(RrImageSet *self, gint i,
+ gboolean original)
+{
+ RrImagePic ***list;
+ gint *len;
+
+ if (original) {
+ list = &self->original;
+ len = &self->n_original;
+ }
+ else {
+ list = &self->resized;
+ len = &self->n_resized;
}
+
+ g_assert(i >= 0 && i < *len);
+
+ /* remove the picture data as a key in the cache */
+ g_hash_table_remove(self->cache->pic_table, (*list)[i]);
+
+ /* free the picture being removed */
+ RrImagePicFree((*list)[i]);
+
+ /* copy the elements after the removed one in the array forward one space
+ and shrink the array down one size */
+ for (i = i+1; i < *len; ++i)
+ (*list)[i-1] = (*list)[i];
+ --(*len);
+ *list = g_renew(RrImagePic*, *list, *len);
}
-/*! Add a picture to an Image, that is, add another copy of the image at
- another size. This may add it to the "originals" list or to the
- "resized" list. */
-static void AddPicture(RrImage *self, RrImagePic ***list, gint *len,
- RrImagePic *pic)
+/*! Add an RrImagePic to an RrImageSet.
+ The RrImagePic should _not_ exist in the image cache already.
+ Pictures are added to the front of the list, to maintain the ordering of
+ newest to oldest.
+*/
+static void RrImageSetAddPicture(RrImageSet *self, RrImagePic *pic,
+ gboolean original)
{
gint i;
+ RrImagePic ***list;
+ gint *len;
g_assert(pic->width > 0 && pic->height > 0);
+ g_assert(g_hash_table_lookup(self->cache->pic_table, pic) == NULL);
+
+ /* choose which list in the RrImageSet to add the new picture to. */
+ if (original) {
+ /* remove the resized picture of the same size if one exists */
+ for (i = 0; i < self->n_resized; ++i)
+ if (self->resized[i]->width == pic->width ||
+ self->resized[i]->height == pic->height)
+ {
+ RrImageSetRemovePictureAt(self, i, FALSE);
+ break;
+ }
- if (pic->name)
- g_assert(!g_hash_table_lookup(self->cache->name_table, pic->name));
- else
- g_assert(!g_hash_table_lookup(self->cache->pic_table, pic));
+ list = &self->original;
+ len = &self->n_original;
+ }
+ else {
+ list = &self->resized;
+ len = &self->n_resized;
+ }
- /* grow the list */
+ /* grow the list by one spot, shift everything down one, and insert the new
+ picture at the front of the list */
*list = g_renew(RrImagePic*, *list, ++*len);
-
- /* move everything else down one */
for (i = *len-1; i > 0; --i)
(*list)[i] = (*list)[i-1];
-
- /* set the new picture up at the front of the list */
(*list)[0] = pic;
- /* add the name or the picture as a key to point to this image in the
- cache */
- if (pic->name)
- g_hash_table_insert(self->cache->name_table, pic->name, self);
- else
- g_hash_table_insert(self->cache->pic_table, (*list)[0], self);
+ /* add the picture as a key to point to this image in the cache */
+ g_hash_table_insert(self->cache->pic_table, (*list)[0], self);
/*
#ifdef DEBUG
*/
}
-/*! Remove a picture from an Image. This may remove it from the "originals"
- list or the "resized" list. */
-static void RemovePicture(RrImage *self, RrImagePic ***list,
- gint i, gint *len)
+/*! Merges two image sets, destroying one, and returning the other. */
+RrImageSet* RrImageSetMergeSets(RrImageSet *b, RrImageSet *a)
+{
+ gint a_i, b_i, merged_i;
+ RrImagePic **original, **resized;
+ gint n_original, n_resized, tmp;
+ GSList *it;
+
+ const gint max_resized = a->cache->max_resized_saved;
+
+ if (!a)
+ return b;
+ if (!b)
+ return a;
+ if (a == b)
+ return b;
+
+ /* the original and resized picture lists in an RrImageSet are kept ordered
+ as newest to oldest. we don't have timestamps for them, so we cannot
+ preserve this in the merged RrImageSet exactly. a decent approximation,
+ i think, is to add them in alternating order (one from a, one from b,
+ repeat). this way, the newest from each will be near the front at
+ least, and in the resized list, when we drop an old picture, we will
+ not always only drop from a or b only, but from each of them equally (or
+ from whichever has more resized pictures.
+ */
+
+ g_assert(b->cache == a->cache);
+
+ a_i = b_i = merged_i = 0;
+ n_original = a->n_original + b->n_original;
+ original = g_new(RrImagePic*, n_original);
+ while (merged_i < n_original) {
+ if (a_i < a->n_original)
+ original[merged_i++] = a->original[a_i++];
+ if (b_i < b->n_original)
+ original[merged_i++] = b->original[b_i++];
+ }
+
+ a_i = b_i = merged_i = 0;
+ n_resized = MIN(max_resized, a->n_resized + b->n_resized);
+ resized = g_new(RrImagePic*, n_resized);
+ while (merged_i < n_resized) {
+ if (a_i < a->n_resized)
+ resized[merged_i++] = a->resized[a_i++];
+ if (b_i < b->n_resized && merged_i < n_resized)
+ resized[merged_i++] = b->resized[b_i++];
+ }
+
+ /* if there are any RrImagePic objects left over in a->resized or
+ b->resized, they need to be disposed of, and removed from the cache.
+
+ updates the size of the list, as we want to remember which pointers
+ were merged from which list (and don't want to remember the ones we
+ did not merge and have freed).
+ */
+ tmp = a_i;
+ for (; a_i < a->n_resized; ++a_i) {
+ g_hash_table_remove(a->cache->pic_table, a->resized[a_i]);
+ RrImagePicFree(a->resized[a_i]);
+ }
+ a->n_resized = tmp;
+
+ tmp = b_i;
+ for (; b_i < b->n_resized; ++b_i) {
+ g_hash_table_remove(a->cache->pic_table, b->resized[b_i]);
+ RrImagePicFree(b->resized[b_i]);
+ }
+ b->n_resized = tmp;
+
+ /* we will use the a object as the merge destination, so things in b will
+ be moving.
+
+ the cache's name_table will point to b for all the names in b->names,
+ so these need to be updated to point at a instead.
+ also, the cache's pic_table will point to b for all the pictures in b,
+ so these need to be updated to point at a as well.
+
+ any RrImage objects that were using b should now use a instead.
+
+ the names and images will be all moved into a, and the merged picture
+ lists will be placed in a. the pictures in a and b are moved to new
+ arrays, so the arrays in a and b need to be freed explicitly (the
+ RrImageSetFree function would free the picture data too which we do not
+ want here). then b can be freed.
+ */
+
+ for (it = b->names; it; it = g_slist_next(it))
+ g_hash_table_insert(a->cache->name_table, it->data, a);
+ for (b_i = 0; b_i < b->n_original; ++b_i)
+ g_hash_table_insert(a->cache->pic_table, b->original[b_i], a);
+ for (b_i = 0; b_i < b->n_resized; ++b_i)
+ g_hash_table_insert(a->cache->pic_table, b->resized[b_i], a);
+
+ for (it = b->images; it; it = g_slist_next(it))
+ ((RrImage*)it->data)->set = a;
+
+ a->images = g_slist_concat(a->images, b->images);
+ b->images = NULL;
+ a->names = g_slist_concat(a->names, b->names);
+ b->names = NULL;
+
+ a->n_original = a->n_resized = 0;
+ g_free(a->original);
+ g_free(a->resized);
+ a->original = a->resized = NULL;
+ b->n_original = b->n_resized = 0;
+ g_free(b->original);
+ g_free(b->resized);
+ b->original = b->resized = NULL;
+
+ a->n_original = n_original;
+ a->original = original;
+ a->n_resized = n_resized;
+ a->resized = resized;
+
+ RrImageSetFree(b);
+
+ return a;
+}
+
+static void RrImageSetAddName(RrImageSet *set, const gchar *name)
+{
+ gchar *n;
+
+ n = g_strdup(name);
+ set->names = g_slist_prepend(set->names, n);
+
+ /* add the new name to the hash table */
+ g_assert(g_hash_table_lookup(set->cache->name_table, n) == NULL);
+ g_hash_table_insert(set->cache->name_table, n, set);
+}
+
+
+/************************************************************************
+ RrImage functions.
+**************************************************************************/
+
+
+void RrImageRef(RrImage *self)
{
- gint j;
+ ++self->ref;
+}
+void RrImageUnref(RrImage *self)
+{
+ if (self && --self->ref == 0) {
+ RrImageSet *set;
/*
#ifdef DEBUG
- g_debug("Removing %s picture from the cache:\n "
- "Image 0x%lx, w %d h %d Hash %u",
- (*list == self->original ? "ORIGINAL" : "RESIZED"),
- (gulong)self, (*list)[i]->width, (*list)[i]->height,
- RrImagePicHash((*list)[i]));
+ g_debug("Refcount to 0, removing ALL pictures from the cache:\n "
+ "Image 0x%lx", (gulong)self);
#endif
*/
+ if (self->destroy_func)
+ self->destroy_func(self, self->destroy_data);
- /* remove the name or picture as a key in the cache */
- if ((*list)[i]->name)
- g_hash_table_remove(self->cache->name_table, (*list)[i]->name);
- else
- g_hash_table_remove(self->cache->pic_table, (*list)[i]);
+ set = self->set;
+ set->images = g_slist_remove(set->images, self);
- /* free the picture */
- RrImagePicFree((*list)[i]);
- /* shift everything down one */
- for (j = i; j < *len-1; ++j)
- (*list)[j] = (*list)[j+1];
- /* shrink the list */
- *list = g_renew(RrImagePic*, *list, --*len);
+ /* free the set as well if there are no images pointing to it */
+ if (!set->images)
+ RrImageSetFree(set);
+ g_slice_free(RrImage, self);
+ }
+}
+
+/*! Set function that will be called just before RrImage is destroyed. */
+void RrImageSetDestroyFunc(RrImage *self, RrImageDestroyFunc func,
+ gpointer data)
+{
+ self->destroy_func = func;
+ self->destroy_data = data;
+}
+
+void RrImageAddFromData(RrImage *self, RrPixel32 *data, gint w, gint h)
+{
+ RrImagePic pic, *ppic;
+ RrImageSet *set;
+
+ g_return_if_fail(self != NULL);
+ g_return_if_fail(data != NULL);
+ g_return_if_fail(w > 0 && h > 0);
+
+ RrImagePicInit(&pic, w, h, data);
+ set = g_hash_table_lookup(self->set->cache->pic_table, &pic);
+ if (set)
+ self->set = RrImageSetMergeSets(self->set, set);
+ else {
+ ppic = RrImagePicNew(w, h, data);
+ RrImageSetAddPicture(self->set, ppic, TRUE);
+ }
+}
+
+RrImage* RrImageNewFromData(RrImageCache *cache, RrPixel32 *data,
+ gint w, gint h)
+{
+ RrImagePic pic, *ppic;
+ RrImage *self;
+ RrImageSet *set;
+
+ g_return_val_if_fail(cache != NULL, NULL);
+ g_return_val_if_fail(data != NULL, NULL);
+ g_return_val_if_fail(w > 0 && h > 0, NULL);
+
+ /* finds a picture in the cache, if it is already in there, and use the
+ RrImageSet the picture lives in. */
+ RrImagePicInit(&pic, w, h, data);
+ set = g_hash_table_lookup(cache->pic_table, &pic);
+ if (set) {
+ self = set->images->data; /* just grab any RrImage from the list */
+ RrImageRef(self);
+ return self;
+ }
+
+ /* the image does not exist in any RrImageSet in the cache, so make
+ a new RrImageSet, and a new RrImage that points to it, and place the
+ new image inside the new RrImageSet */
+
+ self = g_slice_new0(RrImage);
+ self->ref = 1;
+ self->set = g_slice_new0(RrImageSet);
+ self->set->cache = cache;
+ self->set->images = g_slist_append(self->set->images, self);
+
+ ppic = RrImagePicNew(w, h, data);
+ RrImageSetAddPicture(self->set, ppic, TRUE);
+
+ return self;
+}
+
+#if defined(USE_IMLIB2)
+typedef struct _ImlibLoader ImlibLoader;
+
+struct _ImlibLoader
+{
+ Imlib_Image img;
+};
+
+void DestroyImlibLoader(ImlibLoader *loader)
+{
+ if (!loader)
+ return;
+
+ imlib_free_image();
+ g_slice_free(ImlibLoader, loader);
}
+ImlibLoader* LoadWithImlib(gchar *path,
+ RrPixel32 **pixel_data,
+ gint *width,
+ gint *height)
+{
+ ImlibLoader *loader = g_slice_new0(ImlibLoader);
+ if (!(loader->img = imlib_load_image(path))) {
+ DestroyImlibLoader(loader);
+ return NULL;
+ }
+
+ /* Get data and dimensions of the image.
+
+ WARNING: This stuff is NOT threadsafe !!
+ */
+ imlib_context_set_image(loader->img);
+ *pixel_data = imlib_image_get_data_for_reading_only();
+ *width = imlib_image_get_width();
+ *height = imlib_image_get_height();
+
+ return loader;
+}
+#endif /* USE_IMLIB2 */
+
+#if defined(USE_LIBRSVG)
+typedef struct _RsvgLoader RsvgLoader;
+
+struct _RsvgLoader
+{
+ RsvgHandle *handle;
+ cairo_surface_t *surface;
+ RrPixel32 *pixel_data;
+};
+
+void DestroyRsvgLoader(RsvgLoader *loader)
+{
+ if (!loader)
+ return;
+
+ if (loader->pixel_data)
+ g_free(loader->pixel_data);
+ if (loader->surface)
+ cairo_surface_destroy(loader->surface);
+ if (loader->handle)
+ g_object_unref(loader->handle);
+ g_slice_free(RsvgLoader, loader);
+}
+
+RsvgLoader* LoadWithRsvg(gchar *path,
+ RrPixel32 **pixel_data,
+ gint *width,
+ gint *height)
+{
+ RsvgLoader *loader = g_slice_new0(RsvgLoader);
+
+ if (!(loader->handle = rsvg_handle_new_from_file(path, NULL))) {
+ DestroyRsvgLoader(loader);
+ return NULL;
+ }
+
+ if (!rsvg_handle_close(loader->handle, NULL)) {
+ DestroyRsvgLoader(loader);
+ return NULL;
+ }
+
+ RsvgDimensionData dimension_data;
+ rsvg_handle_get_dimensions(loader->handle, &dimension_data);
+ *width = dimension_data.width;
+ *height = dimension_data.height;
+
+ loader->surface = cairo_image_surface_create(
+ CAIRO_FORMAT_ARGB32, *width, *height);
+
+ cairo_t* context = cairo_create(loader->surface);
+ gboolean success = rsvg_handle_render_cairo(loader->handle, context);
+ cairo_destroy(context);
+
+ if (!success) {
+ DestroyRsvgLoader(loader);
+ return NULL;
+ }
+
+ loader->pixel_data = g_new(guint32, *width * *height);
+
+ /*
+ Cairo has its data in ARGB with premultiplied alpha, but RrPixel32
+ non-premultipled, so convert that. Also, RrPixel32 doesn't allow
+ strides not equal to the width of the image.
+ */
+
+ /* Verify that RrPixel32 has the same ordering as cairo. */
+ g_assert(RrDefaultAlphaOffset == 24);
+ g_assert(RrDefaultRedOffset == 16);
+ g_assert(RrDefaultGreenOffset == 8);
+ g_assert(RrDefaultBlueOffset == 0);
+
+ guint32 *out_row = loader->pixel_data;
+
+ guint32 *in_row =
+ (guint32*)cairo_image_surface_get_data(loader->surface);
+ gint in_stride = cairo_image_surface_get_stride(loader->surface);
+
+ gint y;
+ for (y = 0; y < *height; ++y) {
+ gint x;
+ for (x = 0; x < *width; ++x) {
+ guchar a = in_row[x] >> 24;
+ guchar r = (in_row[x] >> 16) & 0xff;
+ guchar g = (in_row[x] >> 8) & 0xff;
+ guchar b = in_row[x] & 0xff;
+ out_row[x] =
+ ((r * 256 / (a + 1)) << RrDefaultRedOffset) +
+ ((g * 256 / (a + 1)) << RrDefaultGreenOffset) +
+ ((b * 256 / (a + 1)) << RrDefaultBlueOffset) +
+ (a << RrDefaultAlphaOffset);
+ }
+ in_row += in_stride / 4;
+ out_row += *width;
+ }
+
+ *pixel_data = loader->pixel_data;
+
+ return loader;
+}
+#endif /* USE_LIBRSVG */
+
+RrImage* RrImageNewFromName(RrImageCache *cache, const gchar *name)
+{
+ RrImage *self;
+ RrImageSet *set;
+ gint w, h;
+ RrPixel32 *data;
+ gchar *path;
+ gboolean loaded;
+
+#if defined(USE_IMLIB2)
+ ImlibLoader *imlib_loader = NULL;
+#endif
+#if defined(USE_LIBRSVG)
+ RsvgLoader *rsvg_loader = NULL;
+#endif
+
+ g_return_val_if_fail(cache != NULL, NULL);
+ g_return_val_if_fail(name != NULL, NULL);
+
+ set = g_hash_table_lookup(cache->name_table, name);
+ if (set) {
+ self = set->images->data;
+ RrImageRef(self);
+ return self;
+ }
+
+ /* XXX find the path via freedesktop icon spec (use obt) ! */
+ path = g_strdup(name);
+
+ loaded = FALSE;
+#if defined(USE_LIBRSVG)
+ if (!loaded) {
+ rsvg_loader = LoadWithRsvg(path, &data, &w, &h);
+ loaded = !!rsvg_loader;
+ }
+#endif
+#if defined(USE_IMLIB2)
+ if (!loaded) {
+ imlib_loader = LoadWithImlib(path, &data, &w, &h);
+ loaded = !!imlib_loader;
+ }
+#endif
+
+ g_free(path);
+
+ if (!loaded) {
+ g_message("Cannot load image \"%s\" from file \"%s\"", name, path);
+#if defined(USE_LIBRSVG)
+ DestroyRsvgLoader(rsvg_loader);
+#endif
+#if defined(USE_IMLIB2)
+ DestroyImlibLoader(imlib_loader);
+#endif
+ return NULL;
+ }
+
+ /* get an RrImage that contains an RrImageSet with this picture in it.
+ the RrImage might be new, or reused if the picture was already in the
+ cache.
+
+ either way, we get back an RrImageSet (via the RrImage), and we must add
+ the name to that RrImageSet. because of the check above, we know that
+ there is no RrImageSet in the cache which already has the given name
+ asosciated with it.
+ */
+
+ self = RrImageNewFromData(cache, data, w, h);
+ RrImageSetAddName(self->set, name);
+
+#if defined(USE_LIBRSVG)
+ DestroyRsvgLoader(rsvg_loader);
+#endif
+#if defined(USE_IMLIB2)
+ DestroyImlibLoader(imlib_loader);
+#endif
+
+ return self;
+}
+
+/************************************************************************
+ Image drawing and resizing operations.
+**************************************************************************/
+
/*! Given a picture in RGBA format, of a specified size, resize it to the new
requested size (but keep its aspect ratio). If the image does not need to
be resized (it is already the right size) then this returns NULL. Otherwise
it returns a newly allocated RrImagePic with the resized picture inside it
+ @return Returns a newly allocated RrImagePic object with a new version of the
+ image in the requested size (keeping aspect ratio).
*/
static RrImagePic* ResizeImage(RrPixel32 *src,
gulong srcW, gulong srcH,
gulong ratioX, ratioY;
gulong aspectW, aspectH;
- /* XXX should these variables be ensured to not be zero in the callers? */
- srcW = srcW ? srcW : 1;
- srcH = srcH ? srcH : 1;
- dstW = dstW ? dstW : 1;
- dstH = dstH ? dstH : 1;
+ g_assert(srcW > 0);
+ g_assert(srcH > 0);
+ g_assert(dstW > 0);
+ g_assert(dstH > 0);
/* keep the aspect ratio */
aspectW = dstW;
}
}
- pic = g_new(RrImagePic, 1);
- RrImagePicInit(pic, NULL, dstW, dstH, dststart);
+ pic = g_slice_new(RrImagePic);
+ RrImagePicInit(pic, dstW, dstH, dststart);
return pic;
}
rgba->alpha, area);
}
-/*! Create a new RrImage, which is linked to an image cache */
-RrImage* RrImageNew(RrImageCache *cache)
-{
- RrImage *self;
-
- g_assert(cache != NULL);
-
- self = g_new0(RrImage, 1);
- self->ref = 1;
- self->cache = cache;
- return self;
-}
-
-/*! Set function that will be called just before RrImage is destroyed. */
-void RrImageSetDestroyFunc(RrImage *image, RrImageDestroyFunc func,
- gpointer data)
-{
- image->destroy_func = func;
- image->destroy_data = data;
-}
-
-void RrImageRef(RrImage *self)
-{
- ++self->ref;
-}
-
-void RrImageUnref(RrImage *self)
-{
- if (self && --self->ref == 0) {
-/*
-#ifdef DEBUG
- g_debug("Refcount to 0, removing ALL pictures from the cache:\n "
- "Image 0x%lx", (gulong)self);
-#endif
-*/
- if (self->destroy_func)
- self->destroy_func(self, self->destroy_data);
- while (self->n_original > 0)
- RemovePicture(self, &self->original, 0, &self->n_original);
- while (self->n_resized > 0)
- RemovePicture(self, &self->resized, 0, &self->n_resized);
- g_free(self);
- }
-}
-
-static void AddPictureFromData(RrImage *self, const char *name,
- const RrPixel32 *data, gint w, gint h)
-{
- gint i;
- RrImagePic *pic;
-
- /* make sure we don't already have this size.. */
- for (i = 0; i < self->n_original; ++i)
- if (self->original[i]->width == w && self->original[i]->height == h) {
-/*
-#ifdef DEBUG
- g_debug("Found duplicate ORIGINAL image:\n "
- "Image 0x%lx, w %d h %d", (gulong)self, w, h);
-#endif
-*/
- return;
- }
-
- /* remove any resized pictures of this same size */
- for (i = 0; i < self->n_resized; ++i)
- if (self->resized[i]->width == w || self->resized[i]->height == h) {
- RemovePicture(self, &self->resized, i, &self->n_resized);
- break;
- }
-
- /* add the new picture */
- pic = g_new(RrImagePic, 1);
- RrImagePicInit(pic, name, w, h, g_memdup(data, w*h*sizeof(RrPixel32)));
- AddPicture(self, &self->original, &self->n_original, pic);
-}
-
-gboolean RrImageAddPictureName(RrImage *self, const gchar *name)
-{
-#ifdef USE_IMLIB2
- Imlib_Image img;
- gint w, h;
- RrPixel32 *data;
- gchar *path;
-
- /* XXX find the path via freedesktop icon spec (use obt) ! */
- path = g_strdup(name);
-
- if (!(img = imlib_load_image(path)))
- g_message("Cannot load image \"%s\" from file \"%s\"", name, path);
- g_free(path);
-
- if (!img)
- return FALSE; /* failed to load it */
-
- /* Get data and dimensions of the image.
-
- WARNING: This stuff is NOT threadsafe !!
- */
- imlib_context_set_image(img);
- data = imlib_image_get_data_for_reading_only();
- w = imlib_image_get_width();
- h = imlib_image_get_height();
-
- /* add it to the RrImage, and set its name */
- AddPictureFromData(self, name, data, w, h);
-
- imlib_free_image();
- return TRUE;
-#else
- return FALSE;
-#endif
-}
-
-/*! Add a new picture with the given RGBA pixel data and dimensions into the
- RrImage. This adds an "original" picture to the image.
-*/
-void RrImageAddPicture(RrImage *self, const RrPixel32 *data, gint w, gint h)
-{
- AddPictureFromData(self, NULL, data, w, h);
-}
-
-/*! Remove the picture from the RrImage which has the given dimensions. This
- removes an "original" picture from the image.
-*/
-void RrImageRemovePicture(RrImage *self, gint w, gint h)
-{
- gint i;
-
- /* remove any resized pictures of this same size */
- for (i = 0; i < self->n_original; ++i)
- if (self->original[i]->width == w && self->original[i]->height == h) {
- RemovePicture(self, &self->original, i, &self->n_original);
- break;
- }
-}
-
/*! Draw an RrImage texture into a target pixel buffer. If the RrImage does
not contain a picture of the appropriate size, then one of its "original"
pictures will be resized and used (and stored in the RrImage as a "resized"
{
gint i, min_diff, min_i, min_aspect_diff, min_aspect_i;
RrImage *self;
+ RrImageSet *set;
RrImagePic *pic;
gboolean free_pic;
self = img->image;
+ set = self->set;
pic = NULL;
free_pic = FALSE;
/* is there an original of this size? (only the larger of
w or h has to be right cuz we maintain aspect ratios) */
- for (i = 0; i < self->n_original; ++i)
- if ((self->original[i]->width >= self->original[i]->height &&
- self->original[i]->width == area->width) ||
- (self->original[i]->width <= self->original[i]->height &&
- self->original[i]->height == area->height))
+ for (i = 0; i < set->n_original; ++i)
+ if ((set->original[i]->width >= set->original[i]->height &&
+ set->original[i]->width == area->width) ||
+ (set->original[i]->width <= set->original[i]->height &&
+ set->original[i]->height == area->height))
{
- pic = self->original[i];
+ pic = set->original[i];
break;
}
/* is there a resize of this size? */
- for (i = 0; i < self->n_resized; ++i)
- if ((self->resized[i]->width >= self->resized[i]->height &&
- self->resized[i]->width == area->width) ||
- (self->resized[i]->width <= self->resized[i]->height &&
- self->resized[i]->height == area->height))
+ for (i = 0; i < set->n_resized; ++i)
+ if ((set->resized[i]->width >= set->resized[i]->height &&
+ set->resized[i]->width == area->width) ||
+ (set->resized[i]->width <= set->resized[i]->height &&
+ set->resized[i]->height == area->height))
{
gint j;
RrImagePic *saved;
/* save the selected one */
- saved = self->resized[i];
+ saved = set->resized[i];
/* shift all the others down */
for (j = i; j > 0; --j)
- self->resized[j] = self->resized[j-1];
+ set->resized[j] = set->resized[j-1];
/* and move the selected one to the top of the list */
- self->resized[0] = saved;
+ set->resized[0] = saved;
- pic = self->resized[0];
+ pic = set->resized[0];
break;
}
if (!pic) {
gdouble aspect;
+ RrImageSet *cache_set;
/* find an original with a close size */
min_diff = min_aspect_diff = -1;
min_i = min_aspect_i = 0;
aspect = ((gdouble)area->width) / area->height;
- for (i = 0; i < self->n_original; ++i) {
+ for (i = 0; i < set->n_original; ++i) {
gint diff;
gint wdiff, hdiff;
gdouble myasp;
/* our size difference metric.. */
- wdiff = self->original[i]->width - area->width;
- hdiff = self->original[i]->height - area->height;
+ wdiff = set->original[i]->width - area->width;
+ if (wdiff < 0) wdiff *= 2; /* prefer scaling down than up */
+ hdiff = set->original[i]->height - area->height;
+ if (hdiff < 0) hdiff *= 2; /* prefer scaling down than up */
diff = (wdiff * wdiff) + (hdiff * hdiff);
/* find the smallest difference */
}
/* and also find the smallest difference with the same aspect
ratio (and prefer this one) */
- myasp = ((gdouble)self->original[i]->width) /
- self->original[i]->height;
+ myasp = ((gdouble)set->original[i]->width) /
+ set->original[i]->height;
if (ABS(aspect - myasp) < 0.0000001 &&
(min_aspect_diff < 0 || diff < min_aspect_diff))
{
min_i = min_aspect_i;
/* resize the original to the given area */
- pic = ResizeImage(self->original[min_i]->data,
- self->original[min_i]->width,
- self->original[min_i]->height,
+ pic = ResizeImage(set->original[min_i]->data,
+ set->original[min_i]->width,
+ set->original[min_i]->height,
area->width, area->height);
- /* add the resized image to the image, as the first in the resized
- list */
- if (self->n_resized >= self->cache->max_resized_saved)
- /* remove the last one (last used one) */
- RemovePicture(self, &self->resized, self->n_resized - 1,
- &self->n_resized);
- if (self->cache->max_resized_saved)
- /* add it to the top of the resized list */
- AddPicture(self, &self->resized, &self->n_resized, pic);
- else
- free_pic = TRUE; /* don't leak mem! */
+ /* is it already in the cache ? */
+ cache_set = g_hash_table_lookup(set->cache->pic_table, pic);
+ if (cache_set) {
+ /* merge this set with the one found in the cache - they are
+ apparently the same image ! then next time we won't have to do
+ this resizing, we will use the cache_set's pic instead. */
+ set = RrImageSetMergeSets(set, cache_set);
+ free_pic = TRUE;
+ }
+ else {
+ /* add the resized image to the image, as the first in the resized
+ list */
+ while (set->n_resized >= set->cache->max_resized_saved)
+ /* remove the last one (last used one) to make space for
+ adding our resized picture */
+ RrImageSetRemovePictureAt(set, set->n_resized-1, FALSE);
+ if (set->cache->max_resized_saved)
+ /* add it to the resized list */
+ RrImageSetAddPicture(set, pic, FALSE);
+ else
+ free_pic = TRUE; /* don't leak mem! */
+ }
}
+ /* The RrImageSet may have changed if we merged it with another, so the
+ RrImage object needs to be updated to use the new merged RrImageSet. */
+ self->set = set;
+
g_assert(pic != NULL);
DrawRGBA(target, target_w, target_h,
projects / dana / openbox.git / blobdiff