diff options
Diffstat (limited to 'src/tool_image.c')
| -rw-r--r-- | src/tool_image.c | 514 |
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; -} |