mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-15 16:52:40 +03:00
c105738fa3
This changes the LOG macro to be varadic removing the need for all callsites to have double bracketing and allows for future improvement on how we use the logging macros. The callsites were changed with coccinelle and the changes checked by hand. Compile tested for several frontends but not all. A formatting annotation has also been added which allows the compiler to check the parameters and types passed to the logging.
590 lines
14 KiB
C
590 lines
14 KiB
C
/*
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* Copyright 2010 Vincent Sanders <vince@simtec.co.uk>
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*
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* Framebuffer windowing toolkit scrollbar widgets
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf 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; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <libnsfb.h>
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#include <libnsfb_plot.h>
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#include <libnsfb_event.h>
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#include <libnsfb_cursor.h>
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#include "utils/log.h"
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#include "desktop/browser.h"
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#include "framebuffer/gui.h"
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#include "framebuffer/fbtk.h"
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#include "framebuffer/image_data.h"
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#include "widget.h"
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/* Vertical scroll widget */
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static int
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vscroll_redraw(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int vscroll;
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int vpos;
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nsfb_bbox_t bbox;
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nsfb_bbox_t rect;
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fbtk_widget_t *root = fbtk_get_root_widget(widget);
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fbtk_get_bbox(widget, &bbox);
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nsfb_claim(root->u.root.fb, &bbox);
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rect = bbox;
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/* background */
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nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->bg);
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/* scroll well */
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rect.x0 = bbox.x0 + 2;
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rect.y0 = bbox.y0 + 1;
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rect.x1 = bbox.x1 - 3;
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rect.y1 = bbox.y1 - 2;
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nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->fg);
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nsfb_plot_rectangle(root->u.root.fb, &rect, 1, 0xFF999999, false, false);
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/* scroll bar */
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if ((widget->u.scroll.maximum - widget->u.scroll.minimum) > 0) {
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vscroll = ((widget->height - 4) * widget->u.scroll.thumb) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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vpos = ((widget->height - 4) * widget->u.scroll.position) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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} else {
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vscroll = (widget->height - 4);
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vpos = 0;
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}
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rect.x0 = bbox.x0 + 5;
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rect.y0 = bbox.y0 + 3 + vpos;
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rect.x1 = bbox.x0 + widget->width - 5;
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rect.y1 = bbox.y0 + vscroll + vpos;
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nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->bg);
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nsfb_update(root->u.root.fb, &bbox);
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return 0;
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}
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static int
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vscroll_drag(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int newpos;
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fbtk_widget_t *scrollw = cbi->context;
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newpos = ((widget->u.scroll.drag_position +
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(cbi->y - widget->u.scroll.drag)) *
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(widget->u.scroll.maximum - widget->u.scroll.minimum)) /
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(widget->height - 4);
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if (newpos < scrollw->u.scroll.minimum)
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newpos = scrollw->u.scroll.minimum;
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if (newpos > (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb ))
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newpos = (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb);
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if (newpos == scrollw->u.scroll.position)
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return 0;
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return fbtk_post_callback(widget, FBTK_CBT_SCROLLY, newpos);
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}
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static int
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vscrollu_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int newpos;
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fbtk_widget_t *scrollw = cbi->context;
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if (cbi->event->type != NSFB_EVENT_KEY_DOWN)
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return 0;
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newpos = scrollw->u.scroll.position - scrollw->u.scroll.page;
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if (newpos < scrollw->u.scroll.minimum)
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newpos = scrollw->u.scroll.minimum;
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if (newpos == scrollw->u.scroll.position)
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return 0;
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return fbtk_post_callback(scrollw, FBTK_CBT_SCROLLY, newpos);
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}
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static int
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vscrolld_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int newpos;
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fbtk_widget_t *scrollw = cbi->context;
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if (cbi->event->type != NSFB_EVENT_KEY_DOWN)
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return 0;
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newpos = scrollw->u.scroll.position + scrollw->u.scroll.page;
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if (newpos > (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb ))
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newpos = (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb);
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if (newpos == scrollw->u.scroll.position)
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return 0;
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return fbtk_post_callback(scrollw, FBTK_CBT_SCROLLY, newpos);
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}
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static int
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vscrollarea_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int vscroll;
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int vpos;
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int newpos;
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int ret = 0;
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if (cbi->event->type != NSFB_EVENT_KEY_DOWN) {
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/* end all drags, just in case */
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if (fbtk_set_handler(widget, FBTK_CBT_POINTERMOVE, NULL, NULL) != NULL)
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fbtk_tgrab_pointer(widget);
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return 0;
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}
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switch (cbi->event->value.keycode) {
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case NSFB_KEY_MOUSE_4:
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/* scroll up */
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newpos = widget->u.scroll.position - widget->u.scroll.page;
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if (newpos < widget->u.scroll.minimum)
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newpos = widget->u.scroll.minimum;
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ret = fbtk_post_callback(cbi->context, FBTK_CBT_SCROLLY, newpos);
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break;
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case NSFB_KEY_MOUSE_5:
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/* scroll down */
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newpos = widget->u.scroll.position + widget->u.scroll.page;
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if (newpos > widget->u.scroll.maximum)
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newpos = widget->u.scroll.maximum;
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ret = fbtk_post_callback(cbi->context, FBTK_CBT_SCROLLY, newpos);
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break;
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default:
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if ((widget->u.scroll.maximum - widget->u.scroll.minimum) > 0) {
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vscroll = ((widget->height - 4) * widget->u.scroll.thumb) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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vpos = ((widget->height - 4) * widget->u.scroll.position) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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} else {
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vscroll = (widget->height - 4);
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vpos = 0;
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}
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if (cbi->y < vpos) {
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/* above bar */
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newpos = widget->u.scroll.position - widget->u.scroll.thumb;
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if (newpos < widget->u.scroll.minimum)
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newpos = widget->u.scroll.minimum;
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ret = fbtk_post_callback(cbi->context, FBTK_CBT_SCROLLY, newpos);
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} else if (cbi->y > (vpos + vscroll)) {
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/* below bar */
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newpos = widget->u.scroll.position + widget->u.scroll.thumb;
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if (newpos > widget->u.scroll.maximum)
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newpos = widget->u.scroll.maximum;
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ret = fbtk_post_callback(cbi->context, FBTK_CBT_SCROLLY, newpos);
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} else {
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/* on bar - start drag */
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widget->u.scroll.drag = cbi->y;
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widget->u.scroll.drag_position = vpos;
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fbtk_set_handler(widget, FBTK_CBT_POINTERMOVE, vscroll_drag, widget);
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fbtk_tgrab_pointer(widget);
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}
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}
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return ret;
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}
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/* exported function documented in fbtk.h */
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fbtk_widget_t *
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fbtk_create_vscroll(fbtk_widget_t *parent,
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int x,
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int y,
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int width,
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int height,
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colour fg,
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colour bg,
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fbtk_callback callback,
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void *context)
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{
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fbtk_widget_t *neww;
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neww = fbtk_widget_new(parent,
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FB_WIDGET_TYPE_VSCROLL,
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x,
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y + scrollu.height,
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width,
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height - scrollu.height - scrolld.height);
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neww->fg = fg;
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neww->bg = bg;
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neww->mapped = true;
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fbtk_set_handler(neww, FBTK_CBT_REDRAW, vscroll_redraw, NULL);
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fbtk_set_handler(neww, FBTK_CBT_CLICK, vscrollarea_click, neww);
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fbtk_set_handler(neww, FBTK_CBT_SCROLLY, callback, context);
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neww->u.scroll.btnul = fbtk_create_button(parent,
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x,
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y,
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width,
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scrollu.height,
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fg,
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&scrollu,
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vscrollu_click,
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neww);
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neww->u.scroll.btndr = fbtk_create_button(parent,
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x,
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y + height - scrolld.height,
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width,
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scrolld.height,
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fg,
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&scrolld,
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vscrolld_click,
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neww);
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return neww;
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}
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/* exported function documented in fbtk.h */
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void
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fbtk_reposition_vscroll(fbtk_widget_t *vscroll,
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int x,
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int y,
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int width,
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int height)
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{
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assert(vscroll->type == FB_WIDGET_TYPE_VSCROLL);
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fbtk_set_pos_and_size(vscroll, x, y + scrollu.height,
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width, height - scrollu.height - scrolld.height);
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fbtk_set_pos_and_size(vscroll->u.scroll.btnul,
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x, y, width, scrollu.height);
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fbtk_set_pos_and_size(vscroll->u.scroll.btndr,
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x, y + height - scrolld.height,
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width, scrolld.height);
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}
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/* Horizontal scroll widget */
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static int
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hscroll_redraw(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int hscroll;
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int hpos;
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nsfb_bbox_t bbox;
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nsfb_bbox_t rect;
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fbtk_widget_t *root = fbtk_get_root_widget(widget);
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fbtk_get_bbox(widget, &bbox);
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nsfb_claim(root->u.root.fb, &bbox);
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rect = bbox;
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/* background */
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nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->bg);
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/* scroll well */
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rect.x0 = bbox.x0 + 1;
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rect.y0 = bbox.y0 + 2;
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rect.x1 = bbox.x1 - 2;
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rect.y1 = bbox.y1 - 3;
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nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->fg);
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/* scroll well outline */
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nsfb_plot_rectangle(root->u.root.fb, &rect, 1, 0xFF999999, false, false);
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if ((widget->u.scroll.maximum - widget->u.scroll.minimum) > 0) {
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hscroll = ((widget->width - 4) * widget->u.scroll.thumb) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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hpos = ((widget->width - 4) * widget->u.scroll.position) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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} else {
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hscroll = (widget->width - 4);
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hpos = 0;
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}
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LOG("hscroll %d", hscroll);
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rect.x0 = bbox.x0 + 3 + hpos;
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rect.y0 = bbox.y0 + 5;
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rect.x1 = bbox.x0 + hscroll + hpos;
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rect.y1 = bbox.y0 + widget->height - 5;
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nsfb_plot_rectangle_fill(root->u.root.fb, &rect, widget->bg);
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nsfb_update(root->u.root.fb, &bbox);
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return 0;
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}
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static int
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hscrolll_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int newpos;
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fbtk_widget_t *scrollw = cbi->context;
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if (cbi->event->type != NSFB_EVENT_KEY_DOWN)
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return 0;
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newpos = scrollw->u.scroll.position - scrollw->u.scroll.page;
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if (newpos < scrollw->u.scroll.minimum)
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newpos = scrollw->u.scroll.minimum;
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if (newpos == scrollw->u.scroll.position) {
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LOG("horiz scroll was the same %d", newpos);
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return 0;
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}
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return fbtk_post_callback(scrollw, FBTK_CBT_SCROLLX, newpos);
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}
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static int
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hscrollr_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int newpos;
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fbtk_widget_t *scrollw = cbi->context;
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if (cbi->event->type != NSFB_EVENT_KEY_DOWN)
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return 0;
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newpos = scrollw->u.scroll.position + scrollw->u.scroll.page;
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if (newpos > (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb ))
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newpos = (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb);
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if (newpos == scrollw->u.scroll.position)
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return 0;
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return fbtk_post_callback(scrollw, FBTK_CBT_SCROLLX, newpos);
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}
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static int
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hscroll_drag(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int newpos;
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fbtk_widget_t *scrollw = cbi->context;
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newpos = ((widget->u.scroll.drag_position +
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(cbi->x - widget->u.scroll.drag)) *
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(widget->u.scroll.maximum - widget->u.scroll.minimum)) /
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(widget->width - 4);
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if (newpos < scrollw->u.scroll.minimum)
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newpos = scrollw->u.scroll.minimum;
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if (newpos > (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb ))
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newpos = (scrollw->u.scroll.maximum - scrollw->u.scroll.thumb);
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if (newpos == scrollw->u.scroll.position)
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return 0;
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return fbtk_post_callback(widget, FBTK_CBT_SCROLLX, newpos);
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}
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static int
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hscrollarea_click(fbtk_widget_t *widget, fbtk_callback_info *cbi)
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{
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int hscroll;
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int hpos;
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int newpos;
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int ret = 0;
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if (cbi->event->type != NSFB_EVENT_KEY_DOWN) {
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/* end all drags, just in case */
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if (fbtk_set_handler(widget, FBTK_CBT_POINTERMOVE, NULL, NULL) != NULL)
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fbtk_tgrab_pointer(widget);
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return 0;
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}
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if ((widget->u.scroll.maximum - widget->u.scroll.minimum) > 0) {
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hscroll = ((widget->width - 4) * widget->u.scroll.thumb) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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hpos = ((widget->width - 4) * widget->u.scroll.position) /
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(widget->u.scroll.maximum - widget->u.scroll.minimum) ;
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} else {
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hscroll = (widget->width - 4);
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hpos = 0;
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}
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if (cbi->x < hpos) {
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/* left of bar */
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newpos = widget->u.scroll.position - widget->u.scroll.page;
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if (newpos < widget->u.scroll.minimum)
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newpos = widget->u.scroll.minimum;
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ret = fbtk_post_callback(cbi->context, FBTK_CBT_SCROLLX, newpos);
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} else if (cbi->x > (hpos + hscroll)) {
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/* right of bar */
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newpos = widget->u.scroll.position + widget->u.scroll.page;
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if (newpos > widget->u.scroll.maximum)
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newpos = widget->u.scroll.maximum;
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ret = fbtk_post_callback(cbi->context, FBTK_CBT_SCROLLX, newpos);
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} else {
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/* on bar - start drag */
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widget->u.scroll.drag = cbi->x;
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widget->u.scroll.drag_position = hpos;
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fbtk_set_handler(widget, FBTK_CBT_POINTERMOVE, hscroll_drag, widget);
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fbtk_tgrab_pointer(widget);
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}
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return ret;
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}
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/* exported function documented in fbtk.h */
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fbtk_widget_t *
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fbtk_create_hscroll(fbtk_widget_t *parent,
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int x,
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int y,
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int width,
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int height,
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colour fg,
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colour bg,
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fbtk_callback callback,
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void *context)
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{
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fbtk_widget_t *neww;
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neww = fbtk_widget_new(parent,
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FB_WIDGET_TYPE_HSCROLL,
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x + scrolll.width,
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y,
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width - scrolll.width - scrollr.width,
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height);
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neww->fg = fg;
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neww->bg = bg;
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neww->mapped = true;
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fbtk_set_handler(neww, FBTK_CBT_REDRAW, hscroll_redraw, NULL);
|
|
fbtk_set_handler(neww, FBTK_CBT_CLICK, hscrollarea_click, neww);
|
|
fbtk_set_handler(neww, FBTK_CBT_SCROLLX, callback, context);
|
|
|
|
neww->u.scroll.btnul = fbtk_create_button(parent,
|
|
x,
|
|
y,
|
|
scrolll.width,
|
|
height,
|
|
fg,
|
|
&scrolll,
|
|
hscrolll_click,
|
|
neww);
|
|
|
|
neww->u.scroll.btndr = fbtk_create_button(parent,
|
|
x + width - scrollr.width,
|
|
y,
|
|
scrollr.width,
|
|
height,
|
|
fg,
|
|
&scrollr,
|
|
hscrollr_click,
|
|
neww);
|
|
|
|
return neww;
|
|
}
|
|
|
|
/* exported function documented in fbtk.h */
|
|
void
|
|
fbtk_reposition_hscroll(fbtk_widget_t *scrollh,
|
|
int x,
|
|
int y,
|
|
int width,
|
|
int height)
|
|
{
|
|
assert(scrollh->type == FB_WIDGET_TYPE_HSCROLL);
|
|
|
|
fbtk_set_pos_and_size(scrollh, x + scrolll.width, y,
|
|
width - scrolll.width - scrollr.width, height);
|
|
fbtk_set_pos_and_size(scrollh->u.scroll.btnul,
|
|
x, y, scrolll.width, height);
|
|
fbtk_set_pos_and_size(scrollh->u.scroll.btndr,
|
|
x + width - scrollr.width, y,
|
|
scrollr.width, height);
|
|
}
|
|
|
|
|
|
/* exported function documented in fbtk.h */
|
|
bool
|
|
fbtk_set_scroll_parameters(fbtk_widget_t *widget,
|
|
int min,
|
|
int max,
|
|
int thumb,
|
|
int page)
|
|
{
|
|
if (widget == NULL)
|
|
return false;
|
|
|
|
if ((widget->type != FB_WIDGET_TYPE_HSCROLL) &&
|
|
(widget->type != FB_WIDGET_TYPE_VSCROLL))
|
|
return false;
|
|
|
|
widget->u.scroll.minimum = min;
|
|
widget->u.scroll.maximum = max;
|
|
widget->u.scroll.thumb = thumb;
|
|
widget->u.scroll.page = page;
|
|
|
|
if (widget->u.scroll.position > max)
|
|
widget->u.scroll.position = max;
|
|
if (widget->u.scroll.position < min)
|
|
widget->u.scroll.position = min;
|
|
|
|
fbtk_request_redraw(widget);
|
|
|
|
return true;
|
|
}
|
|
|
|
/* exported function documented in fbtk.h */
|
|
bool
|
|
fbtk_set_scroll_position(fbtk_widget_t *widget, int position)
|
|
{
|
|
if (widget == NULL)
|
|
return false;
|
|
|
|
if ((widget->type != FB_WIDGET_TYPE_HSCROLL) &&
|
|
(widget->type != FB_WIDGET_TYPE_VSCROLL))
|
|
return false;
|
|
|
|
if ((position < widget->u.scroll.minimum) ||
|
|
(position > widget->u.scroll.maximum))
|
|
return false;
|
|
|
|
widget->u.scroll.position = position;
|
|
|
|
fbtk_request_redraw(widget);
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Local Variables:
|
|
* c-basic-offset:8
|
|
* End:
|
|
*/
|