ref: e663595a5c2e8048f33a27ab911bc9f229231df8
parent: e73570451403c0bbc22d231d6f16cd5afab1524e
author: Simon Tatham <[email protected]>
date: Tue Feb 27 16:03:06 EST 2007
Provide my old drag-based interface to Net as an ifdef-enabled option, and turn it on by default on stylus-based platforms (i.e. currently PocketPC). [originally from svn r7341]
--- a/net.c
+++ b/net.c
@@ -12,6 +12,21 @@
#include "puzzles.h"
#include "tree234.h"
+/*
+ * The standard user interface for Net simply has left- and
+ * right-button mouse clicks in a square rotate it one way or the
+ * other. We also provide, by #ifdef, a separate interface based on
+ * rotational dragging motions. I initially developed this for the
+ * Mac on the basis that it might work better than the click
+ * interface with only one mouse button available, but in fact
+ * found it to be quite strange and unintuitive. Apparently it
+ * works better on stylus-driven platforms such as Palm and
+ * PocketPC, though, so we enable it by default there.
+ */
+#ifdef STYLUS_BASED
+#define USE_DRAGGING
+#endif
+
#define MATMUL(xr,yr,m,x,y) do { \
float rx, ry, xx = (x), yy = (y), *mat = (m); \
rx = mat[0] * xx + mat[2] * yy; \
@@ -1797,6 +1812,9 @@
int cur_x, cur_y;
int cur_visible;
random_state *rs; /* used for jumbling */
+#ifdef USE_DRAGGING
+ int dragtilex, dragtiley, dragstartx, dragstarty, dragged;
+#endif
};
static game_ui *new_ui(game_state *state)
@@ -1871,6 +1889,12 @@
if (button == LEFT_BUTTON ||
button == MIDDLE_BUTTON ||
+#ifdef USE_DRAGGING
+ button == LEFT_DRAG ||
+ button == LEFT_RELEASE ||
+ button == RIGHT_DRAG ||
+ button == RIGHT_RELEASE ||
+#endif
button == RIGHT_BUTTON) {
if (ui->cur_visible) {
@@ -1896,8 +1920,100 @@
y % TILE_SIZE >= TILE_SIZE - TILE_BORDER)
return nullret;
- action = button == LEFT_BUTTON ? ROTATE_LEFT :
- button == RIGHT_BUTTON ? ROTATE_RIGHT : TOGGLE_LOCK;
+#ifdef USE_DRAGGING
+
+ if (button == MIDDLE_BUTTON
+#ifdef STYLUS_BASED
+ || button == RIGHT_BUTTON /* with a stylus, `right-click' locks */
+#endif
+ ) {
+ /*
+ * Middle button never drags: it only toggles the lock.
+ */
+ action = TOGGLE_LOCK;
+ } else if (button == LEFT_BUTTON || button == RIGHT_BUTTON) {
+ /*
+ * Otherwise, we note down the start point for a drag.
+ */
+ ui->dragtilex = tx;
+ ui->dragtiley = ty;
+ ui->dragstartx = x % TILE_SIZE;
+ ui->dragstarty = y % TILE_SIZE;
+ ui->dragged = FALSE;
+ return nullret; /* no actual action */
+ } else if (button == LEFT_DRAG || button == RIGHT_DRAG) {
+ /*
+ * Find the new drag point and see if it necessitates a
+ * rotation.
+ */
+ int x0,y0, xA,yA, xC,yC, xF,yF;
+ int mx, my;
+ int d0, dA, dC, dF, dmin;
+
+ tx = ui->dragtilex;
+ ty = ui->dragtiley;
+
+ mx = x - (ui->dragtilex * TILE_SIZE);
+ my = y - (ui->dragtiley * TILE_SIZE);
+
+ x0 = ui->dragstartx;
+ y0 = ui->dragstarty;
+ xA = ui->dragstarty;
+ yA = TILE_SIZE-1 - ui->dragstartx;
+ xF = TILE_SIZE-1 - ui->dragstartx;
+ yF = TILE_SIZE-1 - ui->dragstarty;
+ xC = TILE_SIZE-1 - ui->dragstarty;
+ yC = ui->dragstartx;
+
+ d0 = (mx-x0)*(mx-x0) + (my-y0)*(my-y0);
+ dA = (mx-xA)*(mx-xA) + (my-yA)*(my-yA);
+ dF = (mx-xF)*(mx-xF) + (my-yF)*(my-yF);
+ dC = (mx-xC)*(mx-xC) + (my-yC)*(my-yC);
+
+ dmin = min(min(d0,dA),min(dF,dC));
+
+ if (d0 == dmin) {
+ return nullret;
+ } else if (dF == dmin) {
+ action = ROTATE_180;
+ ui->dragstartx = xF;
+ ui->dragstarty = yF;
+ ui->dragged = TRUE;
+ } else if (dA == dmin) {
+ action = ROTATE_LEFT;
+ ui->dragstartx = xA;
+ ui->dragstarty = yA;
+ ui->dragged = TRUE;
+ } else /* dC == dmin */ {
+ action = ROTATE_RIGHT;
+ ui->dragstartx = xC;
+ ui->dragstarty = yC;
+ ui->dragged = TRUE;
+ }
+ } else if (button == LEFT_RELEASE || button == RIGHT_RELEASE) {
+ if (!ui->dragged) {
+ /*
+ * There was a click but no perceptible drag:
+ * revert to single-click behaviour.
+ */
+ tx = ui->dragtilex;
+ ty = ui->dragtiley;
+
+ if (button == LEFT_RELEASE)
+ action = ROTATE_LEFT;
+ else
+ action = ROTATE_RIGHT;
+ } else
+ return nullret; /* no action */
+ }
+
+#else /* USE_DRAGGING */
+
+ action = (button == LEFT_BUTTON ? ROTATE_LEFT :
+ button == RIGHT_BUTTON ? ROTATE_RIGHT : TOGGLE_LOCK);
+
+#endif /* USE_DRAGGING */
+
} else if (button == CURSOR_UP || button == CURSOR_DOWN ||
button == CURSOR_RIGHT || button == CURSOR_LEFT) {
switch (button) {
--- a/puzzles.h
+++ b/puzzles.h
@@ -78,6 +78,7 @@
#define SMALL_SCREEN
#define PORTRAIT_SCREEN
#define VIVID_COLOURS
+ #define STYLUS_BASED
#endif
#define IGNOREARG(x) ( (x) = (x) )