mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-27 14:29:42 +03:00
818f4018d2
Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
554 lines
13 KiB
C
554 lines
13 KiB
C
/*
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* Copyright 2017 Vincent Sanders <vince@netsurf-browser.org>
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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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/**
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* \file
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* Local history viewer implementation
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "utils/errors.h"
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#include "utils/nsurl.h"
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#include "netsurf/types.h"
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#include "netsurf/layout.h"
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#include "netsurf/browser_window.h"
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#include "netsurf/core_window.h"
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#include "netsurf/plotters.h"
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#include "netsurf/keypress.h"
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#include "desktop/gui_internal.h"
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#include "desktop/system_colour.h"
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#include "desktop/browser_private.h"
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#include "desktop/browser_history.h"
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#include "desktop/local_history.h"
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#define WIDTH 100
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#define HEIGHT 86
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#define RIGHT_MARGIN 50
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#define BOTTOM_MARGIN 30
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/**
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* local history viewer context
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*/
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struct local_history_session {
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struct browser_window *bw;
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struct core_window_callback_table *cw_t;
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void *core_window_handle;
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struct history_entry *cursor;
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};
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/**
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* plot style for drawing lines between nodes
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*/
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static plot_style_t pstyle_line = {
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.stroke_type = PLOT_OP_TYPE_SOLID,
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.stroke_width = plot_style_int_to_fixed(2),
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};
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/**
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* plot style for drawing background
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*/
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static plot_style_t pstyle_bg = {
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.fill_type = PLOT_OP_TYPE_SOLID,
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};
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/**
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* plot style for drawing rectangle round unselected nodes
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*/
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static plot_style_t pstyle_rect = {
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.stroke_type = PLOT_OP_TYPE_SOLID,
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.stroke_width = plot_style_int_to_fixed(1),
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};
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/**
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* plot style for drawing rectangle round selected nodes
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*/
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static plot_style_t pstyle_rect_sel = {
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.stroke_type = PLOT_OP_TYPE_SOLID,
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.stroke_width = plot_style_int_to_fixed(3),
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};
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/**
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* plot style for drawing rectangle round the cursor node
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*/
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static plot_style_t pstyle_rect_cursor = {
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.stroke_type = PLOT_OP_TYPE_DASH,
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.stroke_width = plot_style_int_to_fixed(3),
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};
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/**
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* plot style for font on unselected nodes
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*/
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static plot_font_style_t pfstyle_node = {
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.family = PLOT_FONT_FAMILY_SANS_SERIF,
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.size = 8 * PLOT_STYLE_SCALE,
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.weight = 400,
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.flags = FONTF_NONE,
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};
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/**
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* plot style for font on unselected nodes
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*/
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static plot_font_style_t pfstyle_node_sel = {
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.family = PLOT_FONT_FAMILY_SANS_SERIF,
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.size = 8 * PLOT_STYLE_SCALE,
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.weight = 900,
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.flags = FONTF_NONE,
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};
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/**
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* Recursively redraw a history entry.
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*
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* \param history history containing the entry
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* \param entry entry to render
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* \param clip redraw area
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* \param x window x offset
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* \param y window y offset
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* \param ctx current redraw context
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*/
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static nserror
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redraw_entry(struct history *history,
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struct history_entry *entry,
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struct history_entry *cursor,
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struct rect *clip,
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int x, int y,
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const struct redraw_context *ctx)
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{
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size_t char_offset;
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int actual_x;
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struct history_entry *child;
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int tailsize = 5;
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plot_style_t *pstyle;
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plot_font_style_t *pfstyle;
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struct rect rect;
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nserror res;
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/* setup plot styles */
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if (entry == history->current) {
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pstyle = &pstyle_rect_sel;
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pfstyle = &pfstyle_node_sel;
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} else {
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pstyle = &pstyle_rect;
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pfstyle = &pfstyle_node;
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}
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/* Only attempt to plot bitmap if it is present */
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if (entry->page.bitmap != NULL) {
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res = ctx->plot->bitmap(ctx,
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entry->page.bitmap,
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entry->x + x,
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entry->y + y,
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WIDTH, HEIGHT,
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0xffffff,
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0);
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if (res != NSERROR_OK) {
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return res;
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}
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}
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rect.x0 = entry->x - 1 + x;
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rect.y0 = entry->y - 1 + y;
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rect.x1 = entry->x + x + WIDTH;
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rect.y1 = entry->y + y + HEIGHT;
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res = ctx->plot->rectangle(ctx, pstyle, &rect);
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if (res != NSERROR_OK) {
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return res;
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}
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/* If this is the cursor, show that */
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if (entry == cursor) {
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rect.x0 -= 1;
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rect.y0 -= 1;
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rect.x1 += 2;
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rect.y1 += 2;
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ctx->plot->rectangle(ctx, &pstyle_rect_cursor, &rect);
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}
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res = guit->layout->position(plot_style_font, entry->page.title,
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strlen(entry->page.title), WIDTH,
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&char_offset, &actual_x);
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if (res != NSERROR_OK) {
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return res;
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}
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res = ctx->plot->text(ctx,
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pfstyle,
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entry->x + x,
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entry->y + HEIGHT + 12 + y,
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entry->page.title,
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char_offset);
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if (res != NSERROR_OK) {
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return res;
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}
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/* for each child node draw a line and recurse redraw into it */
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for (child = entry->forward; child; child = child->next) {
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rect.x0 = entry->x + WIDTH + x;
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rect.y0 = entry->y + HEIGHT / 2 + y;
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rect.x1 = entry->x + WIDTH + tailsize + x;
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rect.y1 = entry->y + HEIGHT / 2 + y;
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res = ctx->plot->line(ctx, &pstyle_line, &rect);
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if (res != NSERROR_OK) {
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return res;
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}
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rect.x0 = entry->x + WIDTH + tailsize + x;
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rect.y0 = entry->y + HEIGHT / 2 + y;
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rect.x1 = child->x - tailsize + x;
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rect.y1 = child->y + HEIGHT / 2 + y;
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res = ctx->plot->line(ctx, &pstyle_line, &rect);
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if (res != NSERROR_OK) {
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return res;
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}
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rect.x0 = child->x - tailsize + x;
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rect.y0 = child->y + HEIGHT / 2 + y;
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rect.x1 = child->x + x;
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rect.y1 = child->y + HEIGHT / 2 + y;
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res = ctx->plot->line(ctx, &pstyle_line, &rect);
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if (res != NSERROR_OK) {
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return res;
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}
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res = redraw_entry(history, child, cursor, clip, x, y, ctx);
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if (res != NSERROR_OK) {
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return res;
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}
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}
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return NSERROR_OK;
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}
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/**
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* Find the history entry at a position.
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*
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* \param entry entry to search from
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* \param x coordinate
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* \param y coordinate
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* \return an entry if found, 0 if none
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*/
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static struct history_entry *
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find_entry_position(struct history_entry *entry, int x, int y)
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{
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struct history_entry *child;
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struct history_entry *found;
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if (!entry) {
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return NULL;
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}
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if ((entry->x <= x) &&
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(x <= entry->x + WIDTH) &&
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(entry->y <= y) &&
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(y <= entry->y + HEIGHT)) {
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return entry;
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}
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for (child = entry->forward; child; child = child->next) {
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found = find_entry_position(child, x, y);
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if (found) {
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return found;
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}
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}
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return NULL;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_scroll_to_cursor(struct local_history_session *session)
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{
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rect cursor;
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if (session->cursor == NULL) {
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return NSERROR_OK;
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}
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cursor.x0 = session->cursor->x - RIGHT_MARGIN / 2;
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cursor.y0 = session->cursor->y - BOTTOM_MARGIN / 2;
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cursor.x1 = cursor.x0 + WIDTH + RIGHT_MARGIN / 2;
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cursor.y1 = cursor.y0 + HEIGHT + BOTTOM_MARGIN / 2;
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session->cw_t->scroll_visible(session->core_window_handle, &cursor);
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return NSERROR_OK;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_init(struct core_window_callback_table *cw_t,
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void *core_window_handle,
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struct browser_window *bw,
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struct local_history_session **session)
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{
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nserror res;
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struct local_history_session *nses;
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res = ns_system_colour_char("Window", &pstyle_bg.fill_colour);
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if (res != NSERROR_OK) {
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return res;
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}
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pfstyle_node.background = pstyle_bg.fill_colour;
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pfstyle_node_sel.background = pstyle_bg.fill_colour;
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res = ns_system_colour_char("GrayText", &pstyle_line.stroke_colour);
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if (res != NSERROR_OK) {
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return res;
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}
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pstyle_rect.stroke_colour = pstyle_line.stroke_colour;
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pfstyle_node.foreground = pstyle_line.stroke_colour;
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res = ns_system_colour_char("ButtonText", &pstyle_rect_sel.stroke_colour);
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if (res != NSERROR_OK) {
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return res;
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}
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pfstyle_node_sel.foreground = pstyle_rect_sel.stroke_colour;
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res = ns_system_colour_char("Highlight", &pstyle_rect_cursor.stroke_colour);
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if (res != NSERROR_OK) {
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return res;
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}
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nses = calloc(1, sizeof(struct local_history_session));
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if (nses == NULL) {
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return NSERROR_NOMEM;
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}
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nses->cw_t = cw_t;
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nses->core_window_handle = core_window_handle;
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local_history_set(nses, bw);
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*session = nses;
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return NSERROR_OK;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror local_history_fini(struct local_history_session *session)
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{
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free(session);
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return NSERROR_OK;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_redraw(struct local_history_session *session,
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int x,
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int y,
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struct rect *clip,
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const struct redraw_context *ctx)
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{
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struct rect r = {
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.x0 = clip->x0 + x,
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.y0 = clip->y0 + y,
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.x1 = clip->x1 + x,
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.y1 = clip->y1 + y,
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};
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if (session->bw == NULL) {
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return NSERROR_OK;
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}
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if (session->bw->history->start == NULL) {
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return NSERROR_OK;
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}
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ctx->plot->clip(ctx, &r);
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ctx->plot->rectangle(ctx, &pstyle_bg, &r);
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return redraw_entry(
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session->bw->history,
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session->bw->history->start,
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session->cursor,
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clip,
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x, y,
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ctx);
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_mouse_action(struct local_history_session *session,
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enum browser_mouse_state mouse,
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int x,
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int y)
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{
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struct history_entry *entry;
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bool new_window;
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if (session->bw == NULL) {
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return NSERROR_BAD_PARAMETER;
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}
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if ((mouse & (BROWSER_MOUSE_PRESS_1 | BROWSER_MOUSE_PRESS_2)) == 0) {
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return NSERROR_NOT_IMPLEMENTED;
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}
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entry = find_entry_position(session->bw->history->start, x, y);
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if (entry == NULL) {
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return NSERROR_NOT_FOUND;
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}
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if (entry == session->bw->history->current) {
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return NSERROR_PERMISSION;
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}
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if (mouse & BROWSER_MOUSE_PRESS_1) {
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new_window = false;
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} else if (mouse & BROWSER_MOUSE_PRESS_2) {
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new_window = true;
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} else {
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new_window = false;
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}
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browser_window_history_go(session->bw, entry, new_window);
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return NSERROR_OK;
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}
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/* exported interface documented in desktop/local_history.h */
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bool
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local_history_keypress(struct local_history_session *session, uint32_t key)
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{
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switch (key) {
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case NS_KEY_NL:
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case NS_KEY_CR:
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/* pressed enter */
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if (session->cursor != session->bw->history->current) {
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browser_window_history_go(session->bw, session->cursor,
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false);
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local_history_scroll_to_cursor(session);
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session->cw_t->invalidate(session->core_window_handle, NULL);
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}
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/* We have handled this keypress */
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return true;
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case NS_KEY_LEFT:
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/* Go to parent */
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if (session->cursor->back) {
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session->cursor = session->cursor->back;
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local_history_scroll_to_cursor(session);
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session->cw_t->invalidate(session->core_window_handle, NULL);
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}
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/* We have handled this keypress */
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return true;
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case NS_KEY_RIGHT:
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/* Go to preferred child if there is one */
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if (session->cursor->forward_pref) {
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session->cursor = session->cursor->forward_pref;
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local_history_scroll_to_cursor(session);
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session->cw_t->invalidate(session->core_window_handle, NULL);
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}
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/* We have handled this keypress */
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return true;
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case NS_KEY_DOWN:
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/* Go to next sibling down, if there is one */
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if (session->cursor->next) {
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session->cursor = session->cursor->next;
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local_history_scroll_to_cursor(session);
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session->cw_t->invalidate(session->core_window_handle, NULL);
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}
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/* We have handled this keypress */
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return true;
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case NS_KEY_UP:
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/* Go to next sibling up, if there is one */
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if (session->cursor->back) {
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struct history_entry *ent = session->cursor->back->forward;
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while (ent->next != NULL && ent->next != session->cursor) {
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ent = ent->next;
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}
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session->cursor = ent;
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local_history_scroll_to_cursor(session);
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session->cw_t->invalidate(session->core_window_handle, NULL);
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}
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/* We have handled this keypress */
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return true;
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}
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return false;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_set(struct local_history_session *session,
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struct browser_window *bw)
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{
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session->bw = bw;
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session->cursor = NULL;
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if (bw != NULL) {
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assert(session->bw->history != NULL);
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session->cursor = bw->history->current;
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session->cw_t->update_size(session->core_window_handle,
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session->bw->history->width,
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session->bw->history->height);
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local_history_scroll_to_cursor(session);
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}
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return NSERROR_OK;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_get_size(struct local_history_session *session,
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int *width,
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int *height)
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{
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*width = session->bw->history->width + 20;
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*height = session->bw->history->height + 20;
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return NSERROR_OK;
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}
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/* exported interface documented in desktop/local_history.h */
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nserror
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local_history_get_url(struct local_history_session *session,
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int x, int y,
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nsurl **url_out)
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{
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struct history_entry *entry;
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if (session->bw == NULL) {
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return NSERROR_BAD_PARAMETER;
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}
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entry = find_entry_position(session->bw->history->start, x, y);
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if (entry == NULL) {
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return NSERROR_NOT_FOUND;
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}
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*url_out = nsurl_ref(entry->page.url);
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return NSERROR_OK;
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}
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