aboutsummaryrefslogtreecommitdiff
path: root/src/tool_image.c
diff options
context:
space:
mode:
authorThomas White <taw@bitwiz.org.uk>2012-06-14 16:02:15 +0100
committerThomas White <taw@bitwiz.org.uk>2012-06-14 16:02:15 +0100
commit34db1cd5f43ccd48cf672266413f608173eb838f (patch)
tree6faac72cd19c8ef3cf13211aaa900e73a118bc44 /src/tool_image.c
parent940337bb4e46463b794fd9779cc3e07e7e175cee (diff)
Simplify...
Diffstat (limited to 'src/tool_image.c')
-rw-r--r--src/tool_image.c514
1 files changed, 0 insertions, 514 deletions
diff --git a/src/tool_image.c b/src/tool_image.c
deleted file mode 100644
index 2495b95..0000000
--- a/src/tool_image.c
+++ /dev/null
@@ -1,514 +0,0 @@
-/*
- * tool_image.c
- *
- * Colloquium - A tiny presentation program
- *
- * Copyright (c) 2011 Thomas White <taw@bitwiz.org.uk>
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- *
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <math.h>
-#include <gdk/gdkkeysyms.h>
-
-#include "presentation.h"
-#include "objects.h"
-#include "mainwindow.h"
-#include "slide_render.h"
-
-
-enum image_drag_reason
-{
- IMAGE_DRAG_REASON_NONE,
- IMAGE_DRAG_REASON_RESIZE,
-};
-
-
-struct image_toolinfo
-{
- struct toolinfo base;
- enum image_drag_reason drag_reason;
- enum corner drag_corner;
- double box_x;
- double box_y;
- double box_width;
- double box_height;
- double drag_initial_x;
- double drag_initial_y;
-};
-
-
-struct image_object
-{
- struct object base;
-
- struct image *image;
- GdkPixbuf *scaled_pb;
- int scaled_w;
- int scaled_h;
- double diagonal_length;
-};
-
-
-static void update_image(struct image_object *o)
-{
- struct image *i = o->image;
- int w, h;
-
- /* Fit the width and calculate the height */
- w = o->base.bb_width;
- h = ((double)i->height / i->width) * o->base.bb_width;
- if ( h > o->base.bb_height ) {
- h = o->base.bb_height;
- w = ((double)i->width / i->height) * o->base.bb_height;
- }
-
- if ( (o->scaled_w != w) || (o->scaled_h != h) ) {
- if ( o->scaled_pb != NULL ) gdk_pixbuf_unref(o->scaled_pb);
- o->scaled_pb = gdk_pixbuf_scale_simple(i->pb, w, h,
- GDK_INTERP_BILINEAR);
- } /* else the size didn't change */
-}
-
-
-static void render_image_object(cairo_t *cr, struct object *op)
-{
- struct image_object *o = (struct image_object *)op;
-
- cairo_new_path(cr);
- cairo_rectangle(cr, op->x, op->y, op->bb_width, op->bb_height);
- gdk_cairo_set_source_pixbuf(cr, o->scaled_pb, op->x, op->y);
- cairo_fill(cr);
-}
-
-
-
-static void update_image_object(struct object *op)
-{
- struct image_object *o = (struct image_object *)op;
- update_image(o);
-}
-
-
-static void delete_image_object(struct object *op)
-{
- struct image_object *o = (struct image_object *)op;
- if ( o->scaled_pb != NULL ) gdk_pixbuf_unref(o->scaled_pb);
- unref_image(o->image);
-}
-
-
-static void serialize(struct object *op, struct serializer *ser)
-{
- struct image_object *o = (struct image_object *)op;
-
- serialize_f(ser, "x", op->x);
- serialize_f(ser, "y", op->y);
- serialize_f(ser, "w", op->bb_width);
- serialize_f(ser, "h", op->bb_height);
- serialize_s(ser, "filename", o->image->filename);
-}
-
-
-static struct image_object *new_image_object(double x, double y,
- double bb_width, double bb_height,
- char *filename, struct style *sty,
- struct image_store *is,
- struct image_toolinfo *ti)
-{
- struct image_object *new;
-
- new = calloc(1, sizeof(*new));
- if ( new == NULL ) return NULL;
-
- /* Base properties */
- new->base.x = x; new->base.y = y;
- new->base.bb_width = bb_width;
- new->base.bb_height = bb_height;
- new->base.type = OBJ_IMAGE;
- new->base.empty = 0;
- new->base.parent = NULL;
- new->base.style = sty;
-
- new->scaled_pb = NULL;
- new->image = get_image(is, filename);
- if ( new->image == NULL ) {
- free(new);
- printf("Failed to load or get image.\n");
- return NULL;
- }
-
- /* Methods for this object */
- new->base.render_object = render_image_object;
- new->base.delete_object = delete_image_object;
- new->base.update_object = update_image_object;
- new->base.serialize = serialize;
-
- return new;
-}
-
-
-struct object *add_image_object(struct slide *s, double x, double y,
- double bb_width, double bb_height,
- char *filename, struct style *sty,
- struct image_store *is,
- struct image_toolinfo *ti)
-{
- struct image_object *new;
-
- new = new_image_object(x, y, bb_width, bb_height,
- filename, sty, is, ti);
- if ( new == NULL ) return NULL;
-
- new->base.parent = s;
- if ( add_object_to_slide(s, (struct object *)new) ) {
- free(new);
- return NULL;
- }
-
- update_image(new);
- redraw_slide(s);
-
- return (struct object *)new;
-}
-
-
-static void calculate_box_size(struct object *o, double x, double y,
- struct image_toolinfo *ti)
-{
- double ddx, ddy, dlen, mult;
- double vx, vy, dbx, dby;
- struct image_object *to = (struct image_object *)o;
-
- ddx = x - ti->drag_initial_x;
- ddy = y - ti->drag_initial_y;
-
- switch ( ti->drag_corner ) {
-
- case CORNER_BR :
- vx = o->bb_width;
- vy = o->bb_height;
- break;
-
- case CORNER_BL :
- vx = -o->bb_width;
- vy = o->bb_height;
- break;
-
- case CORNER_TL :
- vx = -o->bb_width;
- vy = -o->bb_height;
- break;
-
- case CORNER_TR :
- vx = o->bb_width;
- vy = -o->bb_height;
- break;
-
- case CORNER_NONE :
- default:
- vx = 0.0;
- vy = 0.0;
- break;
-
- }
-
- dlen = (ddx*vx + ddy*vy) / to->diagonal_length;
- mult = (dlen+to->diagonal_length) / to->diagonal_length;
-
- ti->box_width = o->bb_width * mult;
- ti->box_height = o->bb_height * mult;
- dbx = ti->box_width - o->bb_width;
- dby = ti->box_height - o->bb_height;
-
- if ( ti->box_width < 40.0 ) {
- mult = 40.0 / o->bb_width;
- }
- if ( ti->box_height < 40.0 ) {
- mult = 40.0 / o->bb_height;
- }
- ti->box_width = o->bb_width * mult;
- ti->box_height = o->bb_height * mult;
- dbx = ti->box_width - o->bb_width;
- dby = ti->box_height - o->bb_height;
-
- switch ( ti->drag_corner ) {
-
- case CORNER_BR :
- ti->box_x = o->x;
- ti->box_y = o->y;
- break;
-
- case CORNER_BL :
- ti->box_x = o->x - dbx;
- ti->box_y = o->y;
- break;
-
- case CORNER_TL :
- ti->box_x = o->x - dbx;
- ti->box_y = o->y - dby;
- break;
-
- case CORNER_TR :
- ti->box_x = o->x;
- ti->box_y = o->y - dby;
- break;
-
- case CORNER_NONE :
- break;
-
- }
-
-}
-
-
-static void click_select(struct presentation *p, struct toolinfo *tip,
- double x, double y, GdkEventButton *event,
- enum drag_status *drag_status,
- enum drag_reason *drag_reason)
-{
- enum corner c;
- struct image_toolinfo *ti = (struct image_toolinfo *)tip;
- struct image_object *o = (struct image_object *)p->editing_object;
-
- assert(o->base.type == OBJ_IMAGE);
-
- /* Within the resizing region? */
- c = which_corner(x, y, &o->base);
- if ( c != CORNER_NONE )
- {
- ti->drag_reason = IMAGE_DRAG_REASON_RESIZE;
- ti->drag_corner = c;
-
- ti->drag_initial_x = x;
- ti->drag_initial_y = y;
- o->diagonal_length = pow(o->base.bb_width, 2.0);
- o->diagonal_length += pow(o->base.bb_height, 2.0);
- o->diagonal_length = sqrt(o->diagonal_length);
-
- calculate_box_size((struct object *)o, x, y, ti);
-
- /* Tell the MCP what we did, and return */
- *drag_status = DRAG_STATUS_DRAGGING;
- *drag_reason = DRAG_REASON_TOOL;
- return;
- }
-}
-
-
-static void drag(struct toolinfo *tip, struct presentation *p,
- struct object *o, double x, double y)
-{
- struct image_toolinfo *ti = (struct image_toolinfo *)tip;
-
- if ( ti->drag_reason == IMAGE_DRAG_REASON_RESIZE ) {
-
- calculate_box_size(o, x, y, ti);
- redraw_overlay(p);
-
- }
-}
-
-
-static void end_drag(struct toolinfo *tip, struct presentation *p,
- struct object *o, double x, double y)
-{
- struct image_toolinfo *ti = (struct image_toolinfo *)tip;
-
- calculate_box_size((struct object *)o, x, y, ti);
-
- o->x = ti->box_x;
- o->y = ti->box_y;
- o->bb_width = ti->box_width;
- o->bb_height = ti->box_height;
- update_image((struct image_object *)o);
- redraw_slide(o->parent);
-
- ti->drag_reason = IMAGE_DRAG_REASON_NONE;
-}
-
-
-static void create_region(struct toolinfo *tip, struct presentation *p,
- double x1, double y1, double x2, double y2)
-{
- //struct object *n;
- //struct image_toolinfo *ti = (struct image_toolinfo *)tip;
- //struct image_object *o;
-
- /* FIXME: Open an "Open file" dialogue box and use the result */
-}
-
-
-static void select_object(struct object *o, struct toolinfo *tip)
-{
- /* Do nothing */
-}
-
-
-static int deselect_object(struct object *o, struct toolinfo *tip)
-{
- if ( (o != NULL) && o->empty ) {
- delete_object(o);
- return 1;
- }
-
- return 0;
-}
-
-
-static void draw_overlay(struct toolinfo *tip, cairo_t *cr, struct object *n)
-{
- struct image_toolinfo *ti = (struct image_toolinfo *)tip;
- //struct image_object *o = (struct image_object *)n;
-
- if ( n != NULL ) {
-
- draw_editing_box(cr, n->x, n->y, n->bb_width, n->bb_height);
-
- /* Draw resize handles */
- draw_resize_handle(cr, n->x, n->y+n->bb_height-20.0);
- draw_resize_handle(cr, n->x+n->bb_width-20.0, n->y);
- draw_resize_handle(cr, n->x, n->y);
- draw_resize_handle(cr, n->x+n->bb_width-20.0,
- n->y+n->bb_height-20.0);
-
- }
-
- if ( ti->drag_reason == IMAGE_DRAG_REASON_RESIZE ) {
- draw_rubberband_box(cr, ti->box_x, ti->box_y,
- ti->box_width, ti->box_height);
- }
-
-}
-
-
-static void key_pressed(struct object *o, guint keyval, struct toolinfo *tip)
-{
- /* Do nothing */
-}
-
-
-static void im_commit(struct object *o, gchar *str, struct toolinfo *tip)
-{
- /* Do nothing */
-}
-
-
-static int valid_object(struct object *o)
-{
- if ( o->type == OBJ_IMAGE ) return 1;
- return 0;
-}
-
-
-static struct object *deserialize(struct presentation *p, struct ds_node *root,
- struct toolinfo *tip)
-{
- struct image_object *o;
- double x, y, w, h;
- char *filename;
- struct image_toolinfo *ti = (struct image_toolinfo *)tip;
-
- if ( get_field_f(root, "x", &x) ) {
- fprintf(stderr,
- "Couldn't find x position for object '%s'\n",
- root->key);
- return NULL;
- }
- if ( get_field_f(root, "y", &y) ) {
- fprintf(stderr,
- "Couldn't find y position for object '%s'\n",
- root->key);
- return NULL;
- }
- if ( get_field_f(root, "w", &w) ) {
- fprintf(stderr,
- "Couldn't find width for object '%s'\n",
- root->key);
- return NULL;
- }
- if ( get_field_f(root, "h", &h) ) {
- fprintf(stderr,
- "Couldn't find height for object '%s'\n",
- root->key);
- return NULL;
- }
- if ( get_field_s(root, "filename", &filename) ) {
- fprintf(stderr, "Couldn't find filename for object '%s'\n",
- root->key);
- return NULL;
- }
-
- o = new_image_object(x, y, w, h, filename,
- p->ss->styles[0], p->image_store, ti);
- free(filename);
-
- return (struct object *)o;
-}
-
-
-static gint prop_sig(GtkWidget *widget, struct presentation *p)
-{
- if ( p->editing_object == NULL ) return FALSE;
-
-
- return FALSE;
-}
-
-
-static void realise(struct toolinfo *ti, GtkWidget *w, struct presentation *p)
-{
- GtkWidget *prop;
-
- ti->tbox = gtk_hbox_new(FALSE, 0.0);
- prop = gtk_button_new_from_stock(GTK_STOCK_PROPERTIES);
- g_signal_connect(G_OBJECT(prop), "clicked", G_CALLBACK(prop_sig), p);
- gtk_box_pack_start(GTK_BOX(ti->tbox), prop, FALSE, FALSE, 0);
-
- g_object_ref(ti->tbox);
- gtk_widget_show_all(ti->tbox);
-}
-
-
-struct toolinfo *initialise_image_tool()
-{
- struct image_toolinfo *ti;
-
- ti = malloc(sizeof(*ti));
-
- ti->base.click_select = click_select;
- ti->base.create_default = NULL;
- ti->base.select = select_object;
- ti->base.deselect = deselect_object;
- ti->base.drag = drag;
- ti->base.end_drag = end_drag;
- ti->base.create_region = create_region;
- ti->base.draw_editing_overlay = draw_overlay;
- ti->base.key_pressed = key_pressed;
- ti->base.im_commit = im_commit;
- ti->base.valid_object = valid_object;
- ti->base.deserialize = deserialize;
- ti->base.realise = realise;
-
- return (struct toolinfo *)ti;
-}