diff options
Diffstat (limited to 'apps/common/pdfapp.c')
| -rw-r--r-- | apps/common/pdfapp.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/apps/common/pdfapp.c b/apps/common/pdfapp.c index ef342b43..70a83b29 100644 --- a/apps/common/pdfapp.c +++ b/apps/common/pdfapp.c @@ -512,7 +512,7 @@ void pdfapp_onkey(pdfapp_t *app, int c) } } -void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int state) +void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int modifiers, int state) { pdf_link *link; fz_matrix ctm; @@ -568,6 +568,30 @@ void pdfapp_onmouse(pdfapp_t *app, int x, int y, int btn, int state) app->selr.y0 = y; app->selr.y1 = y; } + if (btn == 4 || btn == 5) /* scroll wheel */ + { + int dir = btn == 4 ? 1 : -1; + app->ispanning = app->iscopying = 0; + if (modifiers & (1<<2)) + { + /* zoom in/out if ctrl is pressed */ + app->zoom += 0.1 * dir; + if (app->zoom > 3.0) + app->zoom = 3.0; + if (app->zoom < 0.1) + app->zoom = 0.1; + pdfapp_showpage(app, 0, 1); + } + else + { + /* scroll up/down, or left/right if + shift is pressed */ + int isx = (modifiers & (1<<0)); + int xstep = isx ? 20 * dir : 0; + int ystep = !isx ? 20 * dir : 0; + pdfapp_panview(app, app->panx + xstep, app->pany + ystep); + } + } } else if (state == -1) |