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This commit is contained in:
Matthew Allum 2005-03-25 17:22:10 +00:00
parent 22acd39f0f
commit a731e612b6
4 changed files with 101 additions and 88 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2005-03-25 mallum,,, <mallum@openedhand.com>
* cltr-photo-grid.c: (cltr_photo_grid_cell_new),
(ctrl_photo_grid_get_zoomed_coords), (cltr_photo_grid_redraw),
(cltr_photo_grid_new):
* cltr-photo-grid.h:
* cltr.c: (cltr_window_new), (idle_cb), (main):
Use GL matrices in a saner way.
Add random rotation to picts
Random minor tweaks
2005-03-24 mallum,,, <mallum@openedhand.com>
* Makefile:

95
cltr-photo-grid.c
View File

@ -37,6 +37,8 @@ cltr_photo_grid_cell_new(ClutterPhotoGrid *grid,
CLTR_DBG ("loaded %s at %ix%i", filename, neww, newh);
cell->angle = 6.0 - (rand()%12);
return cell;
}
@ -69,48 +71,16 @@ static void
ctrl_photo_grid_get_zoomed_coords(ClutterPhotoGrid *grid,
int x,
int y,
float zoom,
float *tx,
float *ty)
{
int max_x = grid->n_cols-1;
/* XXX figure out what magic 2.0 value comes from */
/*
*tx = (float)( (max_x-x) - 1.0 ) * 2.0;
*ty = (float)( y - 1.0 ) * 2.0;
*/
/*
3x3 0,0 -> 2,-2
5x5 0,0 ->
*tx = 4.0;
*ty = -4.0;
4x4 0,0 -> 3.0, -3.0
* figure out translate co-ords for the cell at x,y to get translated
* so its centered for glScale to zoom in on it.
*/
/*
float trange = ((float)(grid->n_cols - 1.0) * 2.0);
float xrange = (float)grid->n_cols - 1.0;
*/
/*
*tx = ((max_x-x) * (trange/xrange)) - (trange/2);
*ty = (y * (trange/xrange)) - (trange/2);
*/
/* assumes rows = cols */
*tx = ((max_x-x) * 2.0) - (grid->n_cols - 1.0);
*ty = (y * 2.0) - (grid->n_cols - 1.0);
/*
*tx = ((max_x-x) * (grid->zoom_max/2.0)) - (grid->n_cols - 1.0);
*ty = (y * (grid->zoom_max/2.0)) - (grid->n_cols - 1.0);
*/
*tx = (float)grid->cell_width * (grid->zoom_max) * x * -1.0;
*ty = (float)grid->cell_height * (grid->zoom_max) * y * -1.0;
}
void
@ -155,7 +125,7 @@ cltr_photo_grid_navigate(ClutterPhotoGrid *grid,
ctrl_photo_grid_cell_to_coords(grid, grid->cell_active, &x, &y);
ctrl_photo_grid_get_zoomed_coords(grid, x, y, zoom,
ctrl_photo_grid_get_zoomed_coords(grid, x, y,
&grid->view_max_x,
&grid->view_max_y);
@ -292,6 +262,12 @@ cltr_photo_grid_redraw(ClutterPhotoGrid *grid)
glDisable(GL_LIGHTING);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_POLYGON_SMOOTH);
/* Assume zoomed out */
zoom = grid->zoom_min;
trans_x = grid->view_min_x;
@ -402,10 +378,15 @@ cltr_photo_grid_redraw(ClutterPhotoGrid *grid)
thumb_w -= (2 * ew_border);
thumb_h -= (2 * ns_border);
/*
x1 = x + ew_border;
y1 = y + ns_border;
*/
x2 = x1 + thumb_w;
x1 = x + ((grid->cell_width - thumb_w)/2);
y1 = y + ((grid->cell_height - thumb_h)/2);
x2 = x1 + thumb_w;
y2 = y1 + thumb_h;
tx = (float) pixb->width / grid->tex_w;
@ -413,18 +394,27 @@ cltr_photo_grid_redraw(ClutterPhotoGrid *grid)
glPushMatrix();
#if 0
glRotatef ( 45.0, x1+(thumb_w/2) - 320, 0.0 /*y2+(thumb_h/2) - 240*/, 0.0);
#endif
/* Translate origin to rotation point ( photo center ) */
glTranslatef( x1 + ((x2-x1)/2), y1 + ((y2-y1)/2), 0.0);
/* Rotate around Z axis */
glRotatef ( cell->angle, 0.0, 0.0, 1.0);
/* Border - why need tex disabled ? */
glDisable(GL_TEXTURE_2D);
if (cell_item == grid->cell_active
&& grid->state == CLTR_PHOTO_GRID_STATE_BROWSE)
glColor4f(1.0, 1.0, 1.0, 1.0);
else
glColor4f(0.8, 0.8, 0.8, 1.0);
glRecti(x1-2, y1-2, x2+2, y2+2);
glColor4f(0.9, 0.95, 0.95, 1.0);
/* Draw with origin in center of photo */
glRecti(-(thumb_w/2)-4, -(thumb_h/2)-4,
(thumb_w/2)+4, (thumb_h/2)+ns_border);
glEnable(GL_TEXTURE_2D);
glEnable(GL_SMOOTH);
glBindTexture(GL_TEXTURE_2D, grid->texs[i]);
@ -443,13 +433,14 @@ cltr_photo_grid_redraw(ClutterPhotoGrid *grid)
*/
{
glBegin (GL_QUADS);
glTexCoord2f (tx, ty); glVertex2i (x2, y2);
glTexCoord2f (0, ty); glVertex2i (x1, y2);
glTexCoord2f (0, 0); glVertex2i (x1, y1);
glTexCoord2f (tx, 0); glVertex2i (x2, y1);
glTexCoord2f (tx, ty); glVertex2i ((thumb_w/2), (thumb_h/2));
glTexCoord2f (0, ty); glVertex2i (-(thumb_w/2), (thumb_h/2));
glTexCoord2f (0, 0); glVertex2i (-(thumb_w/2), -(thumb_h/2));
glTexCoord2f (tx, 0); glVertex2i ((thumb_w/2), -(thumb_h/2));
glEnd ();
}
/* back to regular non translated matrix */
glPopMatrix();
cell_item = g_list_next(cell_item);
@ -489,7 +480,6 @@ cltr_photo_grid_new(ClutterWindow *win,
const gchar *imgs_path)
{
ClutterPhotoGrid *grid = NULL;
int x,y;
grid = util_malloc0(sizeof(ClutterPhotoGrid));
@ -511,13 +501,13 @@ cltr_photo_grid_new(ClutterWindow *win,
grid->zoom_step = 0.05;
grid->zoom = 1.0;
*/
grid->zoom_min = 0.8;
grid->zoom_min = 1.0;
grid->view_min_x = 0.0;
grid->view_min_y = 0.0;
/* Assmes cols == rows */
grid->zoom_max = /* 1.0 + */ (float) (n_rows * 1.0);
grid->zoom_max = /* 1.0 + */ (float) (n_rows * 1.0) - 0.3;
/* Below needs to go else where - some kind of texture manager/helper */
@ -531,12 +521,15 @@ cltr_photo_grid_new(ClutterWindow *win,
grid->cell_active = g_list_first(grid->cells_tail);
/*
ctrl_photo_grid_cell_to_coords(grid, grid->cell_active, &x, &y);
ctrl_photo_grid_get_zoomed_coords(grid, grid->zoom_min,
ctrl_photo_grid_get_zoomed_coords(grid, grid->zoom_max,
x, y,
&grid->view_max_x,
&grid->view_max_y);
*/
cltr_photo_grid_redraw(grid);
return grid;

2
cltr-photo-grid.h
View File

@ -20,7 +20,7 @@ ClutterPhotoGridState;
struct ClutterPhotoGridCell
{
Pixbuf *pixb;
float angle;
};
struct ClutterPhotoGrid

81
cltr.c
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@ -213,29 +213,15 @@ cltr_window_new(int width, int height)
glXMakeCurrent(CltrCntx.xdpy, win->xwin, CltrCntx.gl_context);
/* All likely better somewhere else */
/* view port */
glViewport (0, 0, width, height);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glOrtho (0, width, height, 0, -1, 1); /* 2d */
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
glClearColor (0xff, 0xff, 0xff, 0xff);
glClearDepth (1.0f);
/* Move to redraw ?
glDisable (GL_DEPTH_TEST);
glDepthMask (GL_FALSE);
glDisable (GL_CULL_FACE);
glShadeModel (GL_FLAT);
glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
*/
glLoadIdentity ();
glOrtho (0, width, height, 0, -1, 1);
glMatrixMode (GL_PROJECTION);
/* likely better somewhere elese */
glEnable (GL_TEXTURE_2D);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@ -258,6 +244,41 @@ cltr_main_loop()
}
gboolean
test_idle_cb(gpointer data)
{
static float angle = 0.0;
glClear(GL_COLOR_BUFFER_BIT);
glClearColor( 0.6, 0.6, 0.62, 1.0);
glColor3f(0.0, 0.0, 0.0);
glTranslatef( 0.0, 0.0, 0.0);
/* get a copy of our untranformed matrix */
glPushMatrix();
/* Translate origin to rotation point */
glTranslatef( 320.0, 240.0, 0.0);
/* Rotate around Z axis */
glRotatef ( angle, 0.0, 0.0, 1.0);
/* Draw tranformed rect with origin at center */
glRecti(-50, -50, 50, 50);
/* Reset our un transformed matrix */
glPopMatrix();
glRecti(-50, -50, 50, 50);
angle += 0.1;
glXSwapBuffers(CltrCntx.xdpy, (Window)data);
return TRUE;
}
gboolean
@ -265,10 +286,6 @@ idle_cb(gpointer data)
{
ClutterPhotoGrid *grid = (ClutterPhotoGrid *)data;
/*
if (grid->state != CLTR_PHOTO_GRID_STATE_BROWSE
&& grid->state != CLTR_PHOTO_GRID_STATE_ZOOMED)
*/
cltr_photo_grid_redraw(grid);
return TRUE;
@ -291,7 +308,7 @@ main(int argc, char **argv)
win = cltr_window_new(640, 480);
grid = cltr_photo_grid_new(win, 3, 3, argv[1]);
grid = cltr_photo_grid_new(win, 4, 4, argv[1]);
Grid = grid; /* laaaaaazy globals */
@ -299,23 +316,15 @@ main(int argc, char **argv)
g_idle_add(idle_cb, grid);
// g_idle_add(test_idle_cb, (gpointer)win->xwin);
XFlush(CltrCntx.xdpy);
XMapWindow(CltrCntx.xdpy, grid->parent->xwin);
XMapWindow(CltrCntx.xdpy, win->xwin);
XFlush(CltrCntx.xdpy);
cltr_main_loop();
/*
{
for (;;)
{
cltr_photo_grid_redraw(grid);
XFlush(CltrCntx.xdpy);
}
}
*/
return 0;
}