mirror of
https://github.com/netsurf-browser/netsurf
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e4a6e982e5
Simplify gui_window structure. Clean up various parts of the gui code. svn path=/import/netsurf/; revision=1092
303 lines
6.5 KiB
C
303 lines
6.5 KiB
C
/*
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* This file is part of NetSurf, http://netsurf.sourceforge.net/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
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*/
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#include <math.h>
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#include "oslib/os.h"
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#include "netsurf/utils/config.h"
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#include "netsurf/desktop/browser.h"
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#include "netsurf/riscos/gui.h"
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#include "netsurf/riscos/options.h"
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#include "netsurf/utils/log.h"
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typedef enum {
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mouseaction_NONE,
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mouseaction_BACK, mouseaction_FORWARD,
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mouseaction_RELOAD, mouseaction_PARENT,
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mouseaction_NEWWINDOW_OR_LINKFG, mouseaction_DUPLICATE_OR_LINKBG,
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mouseaction_TOGGLESIZE, mouseaction_ICONISE, mouseaction_CLOSE
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} mouseaction;
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static double calculate_angle(double x, double y);
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static int anglesDifferent(double a, double b);
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static mouseaction ro_gui_try_mouse_action(void);
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void ro_gui_mouse_action(struct gui_window *g) {
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int x, y;
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mouseaction ma = mouseaction_NONE;
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if (option_use_mouse_gestures)
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ma = ro_gui_try_mouse_action();
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if (ma == mouseaction_NONE) {
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os_mouse(&x, &y, NULL, NULL);
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ro_gui_create_menu(browser_menu, x - 64, y, g);
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}
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else {
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LOG(("MOUSE GESTURE %d", ma));
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switch (ma) {
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case mouseaction_BACK:
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/* browser_window_back(g->data.browser.bw); */
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break;
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case mouseaction_FORWARD:
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/* browser_window_forward(g->data.browser.bw); */
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break;
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case mouseaction_RELOAD:
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/* browser_window_open_location_historical(g->data.browser.bw,
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g->data.browser.bw->url
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#ifdef WITH_POST
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, 0, 0
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#endif
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);*/
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break;
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default: break;
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}
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}
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}
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double calculate_angle(double x, double y) {
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double a;
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if (x == 0.0) {
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if (y < 0.0)
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a = 0.0;
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else
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a = M_PI;
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}
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else {
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a = atan(y / x);
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if (x > 0.0)
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a += M_PI_2;
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else
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a -= M_PI_2;
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}
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return a;
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}
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int anglesDifferent(double a, double b) {
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double c;
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if (a < 0.0)
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a += M_2_PI;
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if (b < 0.0)
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b += M_2_PI;
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if (a > M_2_PI)
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a -= M_2_PI;
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if (b > M_2_PI)
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b -= M_2_PI;
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c = a - b;
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if (c < 0.0)
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c += M_2_PI;
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if (c > M_2_PI)
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c -= M_2_PI;
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return (c > M_PI / 6.0);
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}
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#define STOPPED 2
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#define THRESHOLD 16
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#define DAMPING 1
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/* TODO - something in the following function causes a segfault when
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* mouse actions are turned on. Obviously this needs fixing.
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*/
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mouseaction ro_gui_try_mouse_action(void) {
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os_coord start, current, last, offset, moved;
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double offsetDistance, movedDistance;
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double angle, oldAngle=0.0;
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bits z;
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os_t now;
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int status;
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int m;
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enum {move_NONE, move_LEFT, move_RIGHT, move_UP, move_DOWN} moves[5];
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moves[0] = move_NONE;
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m = 1;
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os_mouse(&start.x, &start.y, &z, &now);
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status = 0;
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do {
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os_mouse(¤t.x, ¤t.y, &z, &now);
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offset.x = current.x - start.x;
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offset.y = current.y - start.y;
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moved.x = current.x - last.x;
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moved.y = current.y - last.y;
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offsetDistance = sqrt((float)(offset.x * offset.x + offset.y * offset.y));
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if (moved.x > 0 || moved.y > 0)
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movedDistance = sqrt((float)(moved.x * moved.x + moved.y * moved.y));
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else
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movedDistance = 0.0;
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angle = calculate_angle((float)offset.x, (float)offset.y);
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switch (status) {
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case 1:
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if (movedDistance < STOPPED ||
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(movedDistance > STOPPED*2.0 && anglesDifferent(angle, oldAngle))) {
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start.x = current.x;
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start.y = current.y;
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status = 0;
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}
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break;
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case 0:
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if (offsetDistance > THRESHOLD) {
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if (fabs((float)offset.x) > fabs((float)offset.y)) {
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if (fabs((float)offset.y) < fabs((float)offset.x) * DAMPING &&
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fabs((float)offset.x) > THRESHOLD*0.75) {
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if (offset.x < 0)
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moves[m] = move_LEFT;
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else
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moves[m] = move_RIGHT;
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if (moves[m] != moves[m-1])
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m++;
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start.x = current.x;
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start.y = current.y;
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oldAngle = angle;
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status = 1;
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}
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}
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else if (fabs((float)offset.y) > fabs((float)offset.x)) {
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if (fabs((float)offset.x) < fabs((float)offset.y) * DAMPING &&
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fabs((float)offset.y) > THRESHOLD*0.75) {
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if (offset.y < 0)
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moves[m] = move_DOWN;
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else
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moves[m] = move_UP;
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if (moves[m] != moves[m-1])
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m++;
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start.x = current.x;
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start.y = current.y;
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oldAngle = angle;
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status = 1;
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}
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}
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}
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break;
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}
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last.x = current.x;
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last.y = current.y;
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} while ((z & 2) != 0 && m < 4);
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LOG(("MOUSEACTIONS: %d %d %d %d\n", moves[0], moves[1],
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moves[2], moves[3]));
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if (m == 2) {
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switch (moves[1]) {
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case move_LEFT:
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LOG(("mouse action: go back"));
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return mouseaction_BACK;
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case move_RIGHT:
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LOG(("MOUSE ACTION: GO FORWARD"));
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return mouseaction_FORWARD;
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case move_DOWN:
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LOG(("mouse action: create new window // open link in new window, foreground"));
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return mouseaction_NEWWINDOW_OR_LINKFG;
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default: break;
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}
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}
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if (m == 3) {
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switch (moves[1]) {
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case move_UP:
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switch (moves[2]) {
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case move_DOWN:
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LOG(("mouse action: reload"));
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return mouseaction_RELOAD;
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case move_RIGHT:
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LOG(("mouse action: toggle size"));
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return mouseaction_TOGGLESIZE;
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case move_LEFT:
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LOG(("mouse action: parent directroy"));
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return mouseaction_PARENT;
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default: break;
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}
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break;
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case move_DOWN:
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switch (moves[2]) {
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case move_LEFT:
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LOG(("mouse action: iconise"));
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return mouseaction_ICONISE;
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case move_UP:
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LOG(("mouse action: duplicate // open link in new window, background"));
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return mouseaction_DUPLICATE_OR_LINKBG;
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case move_RIGHT:
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LOG(("mouse action: close"));
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return mouseaction_CLOSE;
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default: break;
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}
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break;
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default: break;
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}
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}
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if (m == 4) {
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if (moves[1] == move_RIGHT && moves[2] == move_LEFT &&
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moves[3] == move_RIGHT) {
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LOG(("mouse action: close window"));
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return mouseaction_CLOSE;
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}
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}
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return mouseaction_NONE;
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}
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