mirror of
https://gitea.nishi.boats/pyrite-dev/milsko
synced 2025-12-30 22:20:50 +00:00
281 lines
7.7 KiB
C
281 lines
7.7 KiB
C
#include <Mw/Milsko.h>
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static int create(MwWidget handle) {
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MwScrollBar scr = malloc(sizeof(*scr));
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handle->internal = scr;
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MwSetDefault(handle);
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MwVaApply(handle,
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MwNminValue, 0,
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MwNmaxValue, 100,
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MwNvalue, 0,
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MwNareaShown, 50,
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MwNorientation, MwVERTICAL,
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MwNshowArrows, 1,
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NULL);
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return 0;
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}
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static void destroy(MwWidget handle) {
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free(handle->internal);
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}
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static int calc_length(MwWidget handle) {
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int max = MwScrollBarGetVisibleLength(handle);
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int len = MwGetInteger(handle, MwNmaxValue) - MwGetInteger(handle, MwNminValue);
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int area = MwGetInteger(handle, MwNareaShown);
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if(area > len) area = len;
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return max * (double)area / len;
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}
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static int calc_position(MwWidget handle) {
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int max = MwScrollBarGetVisibleLength(handle);
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int len = MwGetInteger(handle, MwNmaxValue) - MwGetInteger(handle, MwNminValue);
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int val = MwGetInteger(handle, MwNvalue);
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return (max - calc_length(handle)) * (double)val / len;
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}
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static void add_value(MwWidget handle, int mul) {
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int val = MwGetInteger(handle, MwNvalue);
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int min = MwGetInteger(handle, MwNminValue);
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int max = MwGetInteger(handle, MwNmaxValue);
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val += mul * MwGetInteger(handle, MwNareaShown);
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if(val < min) val = min;
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if(val > max) val = max;
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MwSetInteger(handle, MwNvalue, val);
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MwDispatchUserHandler(handle, MwNchangedHandler, NULL);
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}
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static void draw(MwWidget handle) {
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MwRect r, rt, rbar;
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MwLLColor base = MwParseColor(handle, MwGetText(handle, MwNbackground));
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MwLLColor dark = MwLightenColor(handle, base, -64, -64, -64);
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MwScrollBar scr = handle->internal;
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int or ;
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int uy, dy, ux, dx;
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MwLLPixmap bgpx = MwGetVoid(handle, MwNbackgroundPixmap);
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r.x = 0;
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r.y = 0;
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r.width = MwGetInteger(handle, MwNwidth);
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r.height = MwGetInteger(handle, MwNheight);
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uy = r.width;
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dy = r.height - r.width;
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ux = r.height;
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dx = r.width - r.height;
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MwDrawWidgetBack(handle, &r, dark, 1, MwTRUE);
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if(bgpx != NULL) MwLLDrawPixmap(handle->lowlevel, &r, bgpx);
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rt = r;
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or = MwGetInteger(handle, MwNorientation);
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if(or == MwVERTICAL) {
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rt.height = rt.width;
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rt.y = r.y;
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if(MwGetInteger(handle, MwNshowArrows)) {
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MwDrawTriangle(handle, &rt, base, (handle->pressed && scr->point.y <= uy) ? 1 : 0, MwNORTH);
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if(handle->pressed && scr->point.y <= uy) {
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add_value(handle, -1);
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}
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} else {
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rt.height = 0;
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}
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rbar.width = r.width;
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rbar.height = calc_length(handle);
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rbar.x = r.x;
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rbar.y = r.y + rt.height + calc_position(handle);
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rt.y = r.y + r.height - rt.height;
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if(MwGetInteger(handle, MwNshowArrows)) {
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MwDrawTriangle(handle, &rt, base, (handle->pressed && scr->point.y >= dy) ? 1 : 0, MwSOUTH);
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if(handle->pressed && scr->point.y >= dy) {
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add_value(handle, 1);
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}
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}
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} else if(or == MwHORIZONTAL) {
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rt.width = rt.height;
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rt.x = r.x;
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if(MwGetInteger(handle, MwNshowArrows)) {
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MwDrawTriangle(handle, &rt, base, (handle->pressed && scr->point.x <= ux) ? 1 : 0, MwWEST);
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if(handle->pressed && scr->point.x <= ux) {
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add_value(handle, -1);
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}
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} else {
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rt.width = 0;
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}
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rbar.width = calc_length(handle);
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rbar.height = r.height;
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rbar.x = r.x + rt.width + calc_position(handle);
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rbar.y = r.y;
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rt.x = r.x + r.width - rt.width;
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if(MwGetInteger(handle, MwNshowArrows)) {
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MwDrawTriangle(handle, &rt, base, (handle->pressed && scr->point.x >= dx) ? 1 : 0, MwEAST);
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if(handle->pressed && scr->point.x >= dx) {
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add_value(handle, 1);
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}
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}
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}
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MwDrawWidgetBack(handle, &rbar, base, 0, MwTRUE);
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MwLLFreeColor(dark);
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MwLLFreeColor(base);
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}
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static void mouse_move(MwWidget handle) {
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int or = MwGetInteger(handle, MwNorientation);
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MwScrollBar scr = handle->internal;
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if(!handle->pressed) return;
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if(scr->drag) {
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int l = 0;
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double len = MwScrollBarGetVisibleLength(handle) - calc_length(handle);
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int min = MwGetInteger(handle, MwNminValue);
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int max = MwGetInteger(handle, MwNmaxValue);
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if(or == MwVERTICAL) {
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l = handle->mouse_point.y + scr->pos;
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} else if(or == MwHORIZONTAL) {
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l = handle->mouse_point.x + scr->pos;
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}
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len = l / len;
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if(len < 0) len = 0;
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if(len > 1) len = 1;
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MwSetInteger(handle, MwNvalue, (int)((max - min) * len - min));
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MwDispatchUserHandler(handle, MwNchangedHandler, NULL);
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MwForceRender(handle);
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}
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}
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static void mouse_down(MwWidget handle, void* ptr) {
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int ww = MwGetInteger(handle, MwNwidth);
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int wh = MwGetInteger(handle, MwNheight);
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int or = MwGetInteger(handle, MwNorientation);
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MwScrollBar scr = handle->internal;
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MwLLMouse* m = ptr;
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if(m->button == MwLLMouseWheelUp) {
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int min = MwGetInteger(handle, MwNminValue);
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int val = MwGetInteger(handle, MwNvalue);
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int diff = MwGetInteger(handle, MwNareaShown);
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val -= diff;
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if(val < min) val = min;
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MwSetInteger(handle, MwNvalue, val);
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MwSetInteger(handle, MwNchangedBy, -diff);
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MwDispatchUserHandler(handle, MwNchangedHandler, NULL);
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} else if(m->button == MwLLMouseWheelDown) {
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int max = MwGetInteger(handle, MwNmaxValue);
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int val = MwGetInteger(handle, MwNvalue);
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int diff = MwGetInteger(handle, MwNareaShown);
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val += diff;
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if(val > max) val = max;
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MwSetInteger(handle, MwNvalue, val);
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MwSetInteger(handle, MwNchangedBy, diff);
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MwDispatchUserHandler(handle, MwNchangedHandler, NULL);
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}
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if(m->button != MwLLMouseLeft) return;
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scr->point = handle->mouse_point;
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scr->drag = 0;
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if(or == MwVERTICAL) {
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int tri = (ww - MwDefaultBorderWidth(handle) * 2) + MwDefaultBorderWidth(handle);
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if(!MwGetInteger(handle, MwNshowArrows)) tri = 0;
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if(tri <= scr->point.y && scr->point.y <= (wh - tri)) {
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scr->drag = 1;
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scr->pos = calc_position(handle) - scr->point.y;
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}
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} else if(or == MwHORIZONTAL) {
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int tri = (wh - MwDefaultBorderWidth(handle) * 2) + MwDefaultBorderWidth(handle);
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if(!MwGetInteger(handle, MwNshowArrows)) tri = 0;
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if(tri <= scr->point.x && scr->point.x <= (ww - tri)) {
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scr->drag = 1;
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scr->pos = calc_position(handle) - scr->point.x;
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}
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}
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MwForceRender(handle);
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}
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static void prop_change(MwWidget handle, const char* key) {
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if(strcmp(key, MwNminValue) == 0 || strcmp(key, MwNvalue) == 0 || strcmp(key, MwNmaxValue) == 0) {
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if(MwGetInteger(handle, MwNvalue) > MwGetInteger(handle, MwNmaxValue)) MwSetInteger(handle, MwNvalue, MwGetInteger(handle, MwNmaxValue));
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MwForceRender(handle);
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}
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if(strcmp(key, MwNshowArrows) == 0 || strcmp(key, MwNareaShown) == 0) {
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MwForceRender(handle);
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}
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}
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static int mwScrollBarGetVisibleLengthImpl(MwWidget handle) {
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int ww = MwGetInteger(handle, MwNwidth);
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int wh = MwGetInteger(handle, MwNheight);
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int or = MwGetInteger(handle, MwNorientation);
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int tri = 0;
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int s = 0;
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if(or == MwVERTICAL) {
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tri = (ww - MwDefaultBorderWidth(handle) * 2) * 2;
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s = wh;
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} else if(or == MwHORIZONTAL) {
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tri = (wh - MwDefaultBorderWidth(handle) * 2) * 2;
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s = ww;
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}
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if(!MwGetInteger(handle, MwNshowArrows)) tri = 0;
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return s - tri - MwDefaultBorderWidth(handle) * 2;
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}
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static void func_handler(MwWidget handle, const char* name, void* out, va_list va) {
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(void)va;
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if(strcmp(name, "mwScrollBarGetVisibleLength") == 0) {
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*(int*)out = mwScrollBarGetVisibleLengthImpl(handle);
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}
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}
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MwClassRec MwScrollBarClassRec = {
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create, /* create */
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destroy, /* destroy */
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draw, /* draw */
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NULL, /* click */
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NULL, /* parent_resize */
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prop_change, /* prop_change */
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mouse_move, /* mouse_move */
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MwForceRender2, /* mouse_up */
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mouse_down, /* mouse_down */
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NULL, /* key */
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func_handler, /* execute */
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NULL, /* tick */
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NULL, /* resize */
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NULL, /* children_update */
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NULL, /* children_prop_change */
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NULL, /* clipboard_received */
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NULL,
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NULL,
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NULL,
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NULL};
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MwClass MwScrollBarClass = &MwScrollBarClassRec;
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