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Diffstat (limited to 'riscos/mouseactions.c')
| -rw-r--r-- | riscos/mouseactions.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/riscos/mouseactions.c b/riscos/mouseactions.c new file mode 100644 index 000000000..265465b5b --- /dev/null +++ b/riscos/mouseactions.c @@ -0,0 +1,289 @@ +/* + * This file is part of NetSurf, http://netsurf.sourceforge.net/ + * Licensed under the GNU General Public License, + * http://www.opensource.org/licenses/gpl-license + * Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net> + */ + +#include <math.h> + +#include "oslib/os.h" + +#include "netsurf/desktop/browser.h" +#include "netsurf/desktop/options.h" +#include "netsurf/riscos/gui.h" +#include "netsurf/utils/log.h" + +typedef enum { + mouseaction_NONE, + mouseaction_BACK, mouseaction_FORWARD, + mouseaction_RELOAD, mouseaction_PARENT, + mouseaction_NEWWINDOW_OR_LINKFG, mouseaction_DUPLICATE_OR_LINKBG, + mouseaction_TOGGLESIZE, mouseaction_ICONISE, mouseaction_CLOSE +} mouseaction; + + +static double calculate_angle(double x, double y); +static int anglesDifferent(double a, double b); +static mouseaction ro_gui_try_mouse_action(void); + + +void ro_gui_mouse_action(gui_window *g) { + + int x, y; + mouseaction ma = mouseaction_NONE; + + if (OPTIONS.use_mouse_gestures) + ma = ro_gui_try_mouse_action(); + + if (ma == mouseaction_NONE) { + + os_mouse(&x, &y, NULL, NULL); + ro_gui_create_menu(browser_menu, x - 64, y, g); + } + else { + + LOG(("MOUSE GESTURE %d", ma)); + switch (ma) { + + case mouseaction_BACK: + browser_window_back(g->data.browser.bw); + break; + + case mouseaction_FORWARD: + browser_window_forward(g->data.browser.bw); + break; + + case mouseaction_RELOAD: + browser_window_open_location_historical(g->data.browser.bw, + g->data.browser.bw->url); + break; + } + } +} + +double calculate_angle(double x, double y) { + + double a; + + if (x == 0.0) { + + if (y < 0.0) + a = 0.0; + else + a = M_PI; + } + else { + + a = atan(y / x); + + if (x > 0.0) + a += M_PI_2; + else + a -= M_PI_2; + } + + return a; +} + +int anglesDifferent(double a, double b) { + + double c; + + if (a < 0.0) + a += M_2_PI; + + if (b < 0.0) + b += M_2_PI; + + if (a > M_2_PI) + a -= M_2_PI; + + if (b > M_2_PI) + b -= M_2_PI; + + c = a - b; + + if (c < 0.0) + c += M_2_PI; + + if (c > M_2_PI) + c -= M_2_PI; + + return (c > M_PI / 6.0); +} + +#define STOPPED 2 +#define THRESHOLD 16 +#define DAMPING 1 + +/* TODO - something in the following function causes a segfault when + * mouse actions are turned on. Obviously this needs fixing. + */ + +mouseaction ro_gui_try_mouse_action(void) { + + os_coord start, current, last, offset, moved; + double offsetDistance, movedDistance; + double angle, oldAngle=0.0; + bits z; + os_t now; + int status; + int m; + enum {move_NONE, move_LEFT, move_RIGHT, move_UP, move_DOWN} moves[5]; + + moves[0] = move_NONE; + m = 1; + + os_mouse(&start.x, &start.y, &z, &now); + status = 0; + + do { + + os_mouse(¤t.x, ¤t.y, &z, &now); + offset.x = current.x - start.x; + offset.y = current.y - start.y; + moved.x = current.x - last.x; + moved.y = current.y - last.y; + offsetDistance = sqrt((offset.x * offset.x + offset.y * offset.y)); + if (moved.x > 0 || moved.y > 0) + movedDistance = sqrt((moved.x * moved.x + moved.y * moved.y)); + else + movedDistance = 0.0; + + angle = calculate_angle(offset.x, offset.y); + + switch (status) { + + case 1: + if (movedDistance < STOPPED || + (movedDistance > STOPPED*2.0 && anglesDifferent(angle, oldAngle))) { + + start.x = current.x; + start.y = current.y; + status = 0; + } + break; + + case 0: + if (offsetDistance > THRESHOLD) { + + if (fabs(offset.x) > fabs(offset.y)) { + + if (fabs(offset.y) < fabs(offset.x) * DAMPING && + fabs(offset.x) > THRESHOLD*0.75) { + + if (offset.x < 0) + moves[m] = move_LEFT; + else + moves[m] = move_RIGHT; + + if (moves[m] != moves[m-1]) + m++; + + start.x = current.x; + start.y = current.y; + oldAngle = angle; + status = 1; + } + } + else if (fabs(offset.y) > fabs(offset.x)) { + + if (fabs(offset.x) < fabs(offset.y) * DAMPING && + fabs(offset.y) > THRESHOLD*0.75) { + + if (offset.y < 0) + moves[m] = move_DOWN; + else + moves[m] = move_UP; + + if (moves[m] != moves[m-1]) + m++; + + start.x = current.x; + start.y = current.y; + oldAngle = angle; + status = 1; + } + } + } + break; + } + + last.x = current.x; + last.y = current.y; + + } while ((z & 2) != 0 && m < 4); + + LOG(("MOUSEACTIONS: %d %d %d %d\n", moves[0], moves[1], + moves[2], moves[3])); + if (m == 2) { + + switch (moves[1]) { + + case move_LEFT: + LOG(("mouse action: go back")); + return mouseaction_BACK; + + case move_RIGHT: + LOG(("MOUSE ACTION: GO FORWARD")); + return mouseaction_FORWARD; + + case move_DOWN: + LOG(("mouse action: create new window // open link in new window, foreground")); + return mouseaction_NEWWINDOW_OR_LINKFG; + } + } + + if (m == 3) { + + switch (moves[1]) { + + case move_UP: + switch (moves[2]) { + + case move_DOWN: + LOG(("mouse action: reload")); + return mouseaction_RELOAD; + + case move_RIGHT: + LOG(("mouse action: toggle size")); + return mouseaction_TOGGLESIZE; + + case move_LEFT: + LOG(("mouse action: parent directroy")); + return mouseaction_PARENT; + } + break; + + case move_DOWN: + switch (moves[2]) { + + case move_LEFT: + LOG(("mouse action: iconise")); + return mouseaction_ICONISE; + + case move_UP: + LOG(("mouse action: duplicate // open link in new window, background")); + return mouseaction_DUPLICATE_OR_LINKBG; + + case move_RIGHT: + LOG(("mouse action: close")); + return mouseaction_CLOSE; + } + break; + } + } + + if (m == 4) { + + if (moves[1] == move_RIGHT && moves[2] == move_LEFT && + moves[3] == move_RIGHT) { + + LOG(("mouse action: close window")); + return mouseaction_CLOSE; + } + } + + return mouseaction_NONE; +} |