mirror of
git://projects.qi-hardware.com/fped.git
synced 2024-09-28 22:14:10 +03:00
- Makefile: use PID in temporary file name in PPM to XPM conversion, so that we don't get mysterious failures in parallel builds - gui_util.c (debug_save_pixbuf, debug_save_widget): helper functions to debug pixbuf and widget content - Makefile: added target "montage" to show the images recorded with debug_save_pixbuf and debug_save_widget - gui_over.c: when debugging, record the saves pixbuf in files - gui_tool.c (tool_hover): removed unnecessary initialization - added infrastructure for tooltips on the canvas (doesn't work properly yet) git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5769 99fdad57-331a-0410-800a-d7fa5415bdb3
216 lines
3.6 KiB
C
216 lines
3.6 KiB
C
/*
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* gui_over.c - GUI, canvas overlays
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*
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* Written 2009, 2010 by Werner Almesberger
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* Copyright 2009, 2010 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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/*
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* This file is for the overlay state machine only. Given the heavy use of
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* global variables, adding other functionality would quickly render it
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* illegible.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "coord.h"
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#include "gui_util.h"
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#include "gui_over.h"
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#if 0
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#define DPRINTF(fmt, ...) fprintf(stderr, fmt "\n", ##__VA_ARGS__)
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#define DSAVE(pix_buf) debug_save_pixbuf(pix_buf->buf)
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#else
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#define DPRINTF(fmt, ...)
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#define DSAVE(buf)
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#endif
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static enum states {
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NOTHING,
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HOVER,
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DRAG,
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BOTH,
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} state = NOTHING;
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/*
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* We cache some externally provided state so that we can redraw without the
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* outside telling us what to redraw, etc.
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*/
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static struct pix_buf *buf_D, *buf_H;
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static struct pix_buf *(*over_D_save_and_draw)(void *user, struct coord to);
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static void *over_D_user;
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static struct pix_buf *(*over_H_save_and_draw)(void *user);
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static void *over_H_user;
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static struct coord over_pos;
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/* ----- actions ----------------------------------------------------------- */
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static void draw_D(void)
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{
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buf_D = over_D_save_and_draw(over_D_user, over_pos);
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DSAVE(buf_D);
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}
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static void draw_H(void)
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{
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buf_H = over_H_save_and_draw(over_H_user);
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DSAVE(buf_H);
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}
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#define STATE(s) DPRINTF("%s", #s); state = s; break;
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#define restore(x) DPRINTF(" restore(%s)", #x); restore_pix_buf(buf_##x)
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#define drop(x) DPRINTF(" drop(%s)", #x); free_pix_buf(buf_##x)
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#define save(x) DPRINTF(" save(%s)", #x)
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#define draw(x) DPRINTF(" draw(%s)", #x); draw_##x()
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#define update() DPRINTF(" update"); over_pos = pos
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/* ----- state machine ----------------------------------------------------- */
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void over_enter(struct pix_buf *(*save_and_draw)(void *user), void *user)
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{
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over_H_save_and_draw = save_and_draw;
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over_H_user = user;
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DPRINTF("enter");
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switch (state) {
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case NOTHING:
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save(H);
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draw(H);
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STATE(HOVER);
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case DRAG:
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restore(D);
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save(H);
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draw(H);
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save(D);
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draw(D);
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STATE(BOTH);
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default:
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abort();
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}
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}
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void over_leave(void)
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{
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DPRINTF("leave");
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switch (state) {
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case HOVER:
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restore(H);
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STATE(NOTHING);
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case BOTH:
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restore(D);
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restore(H);
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save(D);
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draw(D);
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STATE(DRAG);
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default:
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abort();
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}
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}
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void over_begin(struct pix_buf *(*save_and_draw)(void *user, struct coord to),
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void *user, struct coord pos)
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{
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over_pos = pos;
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over_D_save_and_draw = save_and_draw;
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over_D_user = user;
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DPRINTF("begin");
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switch (state) {
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case NOTHING:
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save(D);
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draw(D);
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STATE(DRAG);
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case HOVER:
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save(D);
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draw(D);
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STATE(BOTH);
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default:
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abort();
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}
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}
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void over_move(struct coord pos)
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{
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over_pos = pos;
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DPRINTF("move");
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switch (state) {
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case NOTHING:
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break;
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case HOVER:
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break;
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case DRAG:
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restore(D);
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update();
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save(D);
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draw(D);
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STATE(DRAG);
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case BOTH:
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restore(D);
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update();
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save(D);
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draw(D);
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STATE(BOTH);
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default:
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abort();
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}
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}
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void over_end(void)
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{
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DPRINTF("end");
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switch (state) {
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case DRAG:
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restore(D);
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STATE(NOTHING);
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case BOTH:
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restore(D);
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STATE(HOVER);
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default:
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abort();
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}
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}
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void over_reset(void)
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{
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DPRINTF("reset");
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switch (state) {
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case NOTHING:
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break;
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case HOVER:
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drop(H);
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STATE(NOTHING);
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case DRAG:
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drop(D);
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STATE(NOTHING);
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case BOTH:
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drop(D);
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drop(H);
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STATE(NOTHING);
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default:
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abort();
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}
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}
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