383 lines
11 KiB
C
383 lines
11 KiB
C
#include <X11/keysym.h>
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#include <math.h>
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#include <ctype.h>
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#include "control.h"
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#define NUM_ROWS 6
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#define NUM_COLS 4
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#define DESIGN_WIDTH 382
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#define DESIGN_HEIGHT 534
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#define DESIGN_BUTTON_AREA_Y 224
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#define DESIGN_BUTTON_WIDTH 93
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#define DESIGN_BUTTON_HEIGHT 60
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#define DESIGN_PADDING 2
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char curinput[64] = {0};
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int input_pos = 0;
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static const char *btn_labels[][10] = {
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{ NULL }, // 数字表示
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{ "C", "±", "%", "÷" },
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{ "7", "8", "9", "×" },
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{ "4", "5", "6", "-" },
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{ "1", "2", "3", "+" },
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{ "0", ".", "=", "<" },
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};
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static SuwaButton *find_button_at(SuwaWindow *window, int mx, int my) {
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static SuwaButton found = {0};
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float scale = get_scale(window);
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if (scale <= 0) scale = 1.0f;
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int btn_w = (int)(DESIGN_BUTTON_WIDTH * scale + .5f);
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int btn_h = (int)(DESIGN_BUTTON_HEIGHT * scale + .5f);
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int padding = (int)(DESIGN_PADDING * scale + .5f);;
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int start_y = (int)(DESIGN_BUTTON_AREA_Y * scale + .5f);;
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int row = -1;
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int col = -1;
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for (int r = 1; r < NUM_ROWS; ++r) {
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int y_start = start_y + (r - 1) * btn_h + padding;
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if (my >= y_start && my < y_start + btn_h) {
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row = r;
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break;
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}
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}
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if (row < 0) return NULL;
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for (int c = 0; c < NUM_COLS; ++c) {
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int x_start = padding + c * (btn_w + padding);
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if (mx >= x_start && mx < x_start + btn_w) {
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col = c;
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break;
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}
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}
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if (col < 0) return NULL;
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found.x = padding + col * (btn_w + padding);
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found.y = start_y + (row - 1) * (btn_h + padding);
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found.width = btn_w;
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found.height = btn_h;
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found.text = btn_labels[row][col];
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found.pressed = 1;
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return &found;
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}
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void append_to_input(CtrlLabels *labels, char c) {
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if ((unsigned long)input_pos >= sizeof(curinput) - 2) return;
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strcpy(labels->problem->text, "");
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curinput[input_pos++] = c;
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curinput[input_pos] = '\0';
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strncpy(labels->res->text, curinput, sizeof(labels->res->text) - 1);
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labels->res->text[sizeof(labels->res->text) - 1] = '\0';
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}
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void clear_calculator(CtrlLabels *labels) {
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strcpy(labels->problem->text, "");
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curinput[0] = '\0';
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input_pos = 0;
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strcpy(labels->res->text, "0");
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}
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double evaluate_simple(CtrlLabels *labels, const char *expr) {
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double res = 0.0;
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double cur = 0.0;
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char op = '+';
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int i = 0;
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snprintf(labels->problem->text, sizeof(labels->problem->text), "%s=", expr);
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while (expr[i]) {
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if (expr[i] == ' ') { i++; continue; }
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if (isdigit(expr[i]) || expr[i] == '.') {
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char numbuf[32];
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int j = 0;
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while (isdigit(expr[i]) || expr[i] == '.') {
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if (j < 31) numbuf[j++] = expr[i];
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++i;
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}
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numbuf[j] = '\0';
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cur = atof(numbuf);
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} else {
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if (op == '+') res += cur;
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else if (op == '-') res -= cur;
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else if (op == '*') res *= cur;
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else if (op == '/') {
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if (cur == 0) return NAN;
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res /= cur;
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}
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op = expr[i];
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++i;
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cur = 0.0;
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}
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}
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if (op == '+') res += cur;
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else if (op == '-') res -= cur;
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else if (op == '*') res *= cur;
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else if (op == '/') {
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if (cur == 0) return NAN;
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res /= cur;
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}
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return res;
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}
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void control_expose(SuwaWindow *window, CtrlLabels *labels) {
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if (window->event.type != Expose && window->event.type != ConfigureNotify) return;
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XWindowAttributes attr;
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XGetWindowAttributes(window->display, window->xwindow, &attr);
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int w = attr.width;
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int h = attr.height;
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if (window->backbuf != None) XFreePixmap(window->display, window->backbuf);
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window->backbuf = XCreatePixmap(window->display, window->xwindow, w, h,
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DefaultDepth(window->display, DefaultScreen(window->display)));
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if (window->backbuf == None) window->backbuf = window->xwindow;
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window->target = window->backbuf;
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XftDraw *backdraw = XftDrawCreate(window->display, window->backbuf,
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DefaultVisual(window->display, DefaultScreen(window->display)),
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DefaultColormap(window->display, DefaultScreen(window->display)));
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if (!backdraw) {
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fprintf(stderr, "Pixmap向けXftDrawの作成に失敗。\n");
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XFreePixmap(window->display, window->backbuf);
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window->backbuf = None;
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return;
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}
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XSetForeground(window->display, window->gc, BGCOL);
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XFillRectangle(window->display, window->backbuf, window->gc, 0, 0, w, h);
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float scale = get_scale(window);
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if (scale <= 0) scale = 1.f;
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int label_padding = (int)(20 * scale + .5f);
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// 出力
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{
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XGlyphInfo extents;
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XftTextExtentsUtf8(window->display, labels->res->font,
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(const FcChar8 *)labels->res->text,
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strlen(labels->res->text), &extents);
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int tx = w - label_padding - extents.xOff;
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int ty = (int)(180 * scale + .5f);
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XftDrawStringUtf8(
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backdraw, &labels->res->fg_color, labels->res->font,
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tx, ty, (const FcChar8 *)labels->res->text, 64);
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}
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{
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XGlyphInfo extents;
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XftTextExtentsUtf8(window->display, labels->problem->font,
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(const FcChar8 *)labels->problem->text,
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strlen(labels->problem->text), &extents);
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int tx = w - label_padding - extents.xOff;
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int ty = (int)(80 * scale + .5f);
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XftDrawStringUtf8(
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backdraw, &labels->problem->fg_color, labels->problem->font,
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tx, ty, (const FcChar8 *)labels->problem->text, 64);
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}
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int bw = (int)(DESIGN_BUTTON_WIDTH * scale + .5f);
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int bh = (int)(DESIGN_BUTTON_HEIGHT * scale + .5f);
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int bp = (int)(DESIGN_PADDING * scale + .5f);
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int by = (int)(DESIGN_BUTTON_AREA_Y * scale + .5f);
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XftColor buttonColor;
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#if defined(__OpenBSD__)
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buttonColor = suwaui_set_button_fgcolor(window, "#232320");
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#elif defined(__FreeBSD__)
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buttonColor = suwaui_set_button_fgcolor(window, "#232020");
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#endif
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for (int row = 1; row < NUM_ROWS; ++row) {
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for (int col = 0; col < NUM_COLS; ++col) {
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SuwaButton btn = suwaui_add_button(bp + col * (bw + bp),
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by + (row - 1) * (bh + bp),
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bw, bh, btn_labels[row][col], window->font, BTCOL, buttonColor);
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suwaui_draw_button(window, &btn, backdraw);
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}
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}
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XCopyArea(window->display, window->backbuf, window->xwindow, window->gc,
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0, 0, w, h, 0, 0);
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XftDrawDestroy(backdraw);
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XFlush(window->display);
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}
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void handle_button_press(SuwaWindow *window, int mx, int my) {
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SuwaButton *btn = find_button_at(window, mx, my);
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if (!btn) return;
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btn->pressed = 1;
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XftDraw *backdraw = XftDrawCreate(window->display, window->backbuf,
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DefaultVisual(window->display, DefaultScreen(window->display)),
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DefaultColormap(window->display, DefaultScreen(window->display)));
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if (!backdraw) {
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fprintf(stderr, "Pixmap向けXftDrawの作成に失敗。\n");
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XFreePixmap(window->display, window->backbuf);
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window->backbuf = None;
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return;
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}
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suwaui_draw_button(window, btn, backdraw);
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XFlush(window->display);
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}
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void handle_button_release(SuwaWindow *window, CtrlLabels *labels, int mx, int my) {
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SuwaButton *btn = find_button_at(window, mx, my);
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if (!btn) return;
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btn->pressed = 0;
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XftDraw *backdraw = XftDrawCreate(window->display, window->backbuf,
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DefaultVisual(window->display, DefaultScreen(window->display)),
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DefaultColormap(window->display, DefaultScreen(window->display)));
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if (!backdraw) {
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fprintf(stderr, "Pixmap向けXftDrawの作成に失敗。\n");
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XFreePixmap(window->display, window->backbuf);
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window->backbuf = None;
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return;
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}
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window->target = window->backbuf;
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suwaui_draw_button(window, btn, backdraw);
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XftDrawDestroy(backdraw);
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XFlush(window->display);
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const char *label = btn->text;
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if (strcmp(label, "C") == 0) {
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clear_calculator(labels);
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} else if (strcmp(label, "×") == 0) {
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append_to_input(labels, '*');
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} else if (strcmp(label, "÷") == 0) {
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append_to_input(labels, '/');
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} else if (strcmp(label, "<") == 0) {
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curinput[--input_pos] = '\0';
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strcpy(labels->res->text, curinput[0] ? curinput : "0");
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} else if (strcmp(label, "=") == 0) {
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double res = evaluate_simple(labels, curinput);
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if (isnan(res)) strncpy(labels->res->text, "Error", 5);
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else snprintf(labels->res->text, sizeof(labels->res->text), "%.8g", res);
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} else if (strlen(label) == 1) {
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append_to_input(labels, label[0]);
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}
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window->event = (XEvent){.type = Expose};
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control_expose(window, labels);
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}
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void handle_key_press(SuwaWindow *window, CtrlLabels *labels) {
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KeySym keysym;
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char buf[32];
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int len;
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(void)len;
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keysym = XLookupKeysym(&window->event.xkey, 0);
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len = XLookupString(&window->event.xkey, buf, sizeof(buf), &keysym, NULL);
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if (keysym == XK_Q) {
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window->isrunning = 0;
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return;
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}
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if (keysym == XK_B) {
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puts("標準電卓画面");
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}
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if (keysym == XK_P) {
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puts("プログラマー電卓画面");
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}
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if (keysym == XK_H) {
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puts("履歴画面");
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}
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if (keysym == XK_h) {
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puts("ヘルプ画面");
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puts("-----");
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puts("Q = 終了 Exit");
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puts("X = １文字の消し Remove 1 character");
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puts("C = クリ了 Clear");
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puts("h = ヘルプ画面 Help screen");
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puts("H = 履歴画面 History screen");
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puts("B = 標準電卓画面 Basic calculator screen");
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puts("P = プログラマー電卓画面 Programmer calculator screen");
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}
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if (keysym == XK_C) {
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clear_calculator(labels);
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goto redraw;
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}
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if (keysym == XK_Return || keysym == XK_KP_Enter) {
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double res = evaluate_simple(labels, curinput);
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if (isnan(res)) strncpy(labels->res->text, "Error", 5);
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else snprintf(labels->res->text, sizeof(labels->res->text), "%.8g", res);
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goto redraw;
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}
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if ((keysym == XK_BackSpace && input_pos > 0)
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|| (keysym == XK_Delete && input_pos > 0)
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|| (keysym == XK_X && input_pos > 0)) {
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curinput[--input_pos] = '\0';
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strcpy(labels->res->text, curinput[0] ? curinput : "0");
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goto redraw;
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}
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char c = 0;
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if (keysym >= XK_0 && keysym <= XK_9) c = '0' + (keysym - XK_0);
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else if (keysym >= XK_KP_0 && keysym <= XK_KP_9) c = '0' + (keysym - XK_0);
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else if (keysym == XK_KP_Add || keysym == XK_plus) c = '+';
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else if (keysym == XK_KP_Subtract || keysym == XK_minus) c = '-';
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else if (keysym == XK_KP_Multiply || keysym == XK_asterisk) c = '*';
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else if (keysym == XK_KP_Divide || keysym == XK_slash) c = '/';
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else if (keysym == XK_KP_Decimal || keysym == XK_period) c = '.';
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if (c) {
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append_to_input(labels, c);
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goto redraw;
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}
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return;
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redraw:
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window->event = (XEvent){.type = Expose};
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control_expose(window, labels);
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}
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// void handle_mouse_hover(SuwaWindow *window) {
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// int x = window->event,xmotion.x;
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// int y = window->event,xmotion.y;
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// SuwaButton *hover = find_button_at(x, y);
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// if (hover != hovered_btn) {
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// if (hovered_btn) {
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// hovered_btn->pressed = 0;
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// redraw_single_button(&window, hovered_btn);
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// }
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// hovered_btn = hover;
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// if (hovered_btn) {
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// redraw_single_button(&window, hovered_btn);
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// }
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// }
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// }
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