diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gwin/gwin_textedit.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/src/gwin/gwin_textedit.c b/src/gwin/gwin_textedit.c index 7de57336..8c60ddd2 100644 --- a/src/gwin/gwin_textedit.c +++ b/src/gwin/gwin_textedit.c @@ -46,6 +46,31 @@ static bool_t resizeText(GWidgetObject* gw, size_t pos, int32_t diff) { return TRUE; } +// Function that allows to set the cursor to any position in the string +// This should be optimized. Currently it is an O(n^2) problem and therefore very +// slow. An optimized version would copy the behavior of mf_get_string_width() +// and do the comparation directly inside of that loop so we only iterate +// the string once. +static void TextEditMouseDown(GWidgetObject* gw, coord_t x, coord_t y) { + uint16_t i = 0; + + // Directly jump to the end of the string + if (x > gdispGetStringWidth(gw->text, gw->g.font)) { + gw2obj->cursorPos = strlen(gw->text); + + // Otherwise iterate through each character and get the size in pixels to compare + } else { + i = 1; + while (gdispGetStringWidthCount(gw->text, gw->g.font, i) < x) { + i++; + } + + gw2obj->cursorPos = i-1; + } + + _gwinUpdate((GHandle)gw); +} + #if (GFX_USE_GINPUT && GINPUT_NEED_KEYBOARD) || GWIN_NEED_KEYBOARD static void TextEditKeyboard(GWidgetObject* gw, GEventKeyboard* pke) { // Only react on KEYDOWN events. Ignore KEYUP events. @@ -138,7 +163,7 @@ static const gwidgetVMT texteditVMT = { gwinTexteditDefaultDraw, // default drawing routine #if GINPUT_NEED_MOUSE { - 0, // Process mouse down events (NOT USED) + TextEditMouseDown, // Process mouse down events (NOT USED) 0, // Process mouse up events (NOT USED) 0, // Process mouse move events (NOT USED) }, |